Ranked: 5 ways cyclists over 40 try to protect their heart.
I’m 48 and I ride hard four days a week. When a mate in my club had a heart scare last spring, I went looking for what fit cyclists over 40 actually do about their heart. Four of the five things I tested fix one part at most.
Most of us assume being fit keeps the heart safe. Low resting heart rate, more riding than anyone we know, a doctor who says we’re in great shape. But the cyclists I spoke to who’d had a scare all said a version of the same thing. One, on r/Garmin, after an ablation:
“Turns out I was in constant AFib and could’ve dropped dead at anytime over 2 years and had no idea. Thought I was doing great with my heart health.”
u/Burnt_Phoenix22 · r/GarminIf anything feels wrong on the bike, see a doctor first. What I wanted to know is what you can change yourself: the load you put on your heart every week, your nutrition, your sleep and your strain.
Four of the five fix one part at most. The one that came out on top was the only one that looked at all four together and changed the plan when one of them moved. Full ranking below.
What your heart carries comes from four places, and nothing you own looks at all four together
Before the ranking, what decided it. My clubmate’s problem didn’t show up as one bad ride, and neither did the AFib on r/Garmin. What a heart carries builds up from four places, and most setups watch one of them at most.
Sleep and strain only count if something is on you every night and all day.
Three weeks of nights. A filled square is a night that was tracked.
So my first question for every option was whether it looks at all four together and changes the plan when one of them moves. Then how well it does each one.
How I scored them
Four questions, weighted equally
- 1Training load: does it cap your hard days?A set number of hard days across the whole week, real easy days and strength between them, in phases.
- 2Strain: does it track it day and night?The ride, the job, the commute and the stress, counted in your recovery.
- 3Sleep: does it track every night?Resting heart rate, HRV and temperature overnight, every night, so the plan moves when you’re run-down.
- 4Nutrition: does it plan and count what you eat?Calories, carbs and protein set to each day’s training, and counted in your recovery.
Why those four: researchers who follow endurance athletes for years keep finding that the risk isn’t total hours. In the MARC-2 study, “it wasn’t total volume that raised the risk. It was the share of training at very high intensity.”
The ranking
The people behind THRIVE say that in 2026 no product looked at your training load, strain, sleep and food together, so they built one. After four months, I think the claim holds. The ring is 2.1 g of titanium and 2.0 mm thin, with 7–10 days a charge and 3–4 weeks more in its travel charger, so it stays on every night and all day: that’s your sleep and your strain, measured. The THRIVE app sets your training load, with the hard days capped and real easy days between them, and sets every day’s food to that day’s training, counted in your recovery. MARCO, the AI coach in the app, watches all four at once, changes the plan when one of them moves, and explains every change. It isn’t a medical device and doesn’t diagnose anything.
- ✓Caps the hard days across the whole week, group ride included
- ✓Food and recovery planned with the training, not in another app
- ✓On every night: 7–10 days a charge, 3–4 weeks more in the travel charger
- ✓An AI coach with full context on your training, nutrition and recovery, and it moves the plan when you ask
They sell devices. A bike computer is sold on the ride, a watch on the wrist, a training app on its workout library. None of them is paid to plan your whole week, so none of them does. THRIVE was built the other way round: the plan first, and one ring to keep it up to date.
✓ 30-day money-back trial · 90-day results guarantee · Free shipping
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What it does when all four pile up in one week
Scores can’t show you this part, so here it is on the real app screens, start to finish.
Three hard days in four, two long workdays, three short nights, and the hardest day eaten on too little food. You feel fine. On its own, none of the four looks like much.
An example week. Red is where it starts to cost you.
Recovery 45 · rest required · all four namedRecovery 45, rest required. MARCO names all four: three hard days in four, strain high on two workdays, sleep under baseline with HRV down four days running, and the hardest day under-fuelled. The week is reworked, training, food and bedtime, ready for you to accept.
THRIVE brief for the example week
Session skipped · next one eased · tempo movedAccept it, or ask MARCO about it, and the change is made in front of you: today’s spin is skipped, the next hard session is eased and the tempo work moves a day, so the week still builds without digging a hole.
Real THRIVE screen
Food timed to the session · sleep protectedFuelling is timed to the new session, protein within the hour after it, the last meal three hours before bed for cleaner overnight HRV, and a caffeine cutoff to protect your sleep.
Real THRIVE screenFour things piling up, caught on day five instead of after a scare. No number left for you to work out. The plan changed, and the reason came with it.
A coach caps your hard days and builds recovery into your week. The limits are cost and sight: most coaches don’t plan your food day by day, and they only know what you tell them. They can’t see the three short nights, or the resting heart rate that has crept up five beats since the block started.
- ✕Sees only what you report
- ✕Food rarely planned day by day
TrainerRoad does what it’s built to do: it gives your riding structure and adjusts the next workouts off how you performed in the last ones. That’s the problem for a heart over 40. It only sees the ride. A cold, a run of short sleep or a resting heart rate that has crept up doesn’t move tomorrow’s intervals.
- ✕Never sees your night or your temperature
- ✕No food plan · recovery is rest weeks only
The Edge records every ride exactly as designed. The watch gives you a readiness number on the nights you wore it to bed, and most cyclists take it off at night, so the trend has holes in it. Neither plans your food or your recovery, so the number arrives and the decision is still yours.
- ✕Off your wrist at night, so no clean trend
- ✕No plan, no food, no recovery
This is what most worried cyclists over 40 do first. It doesn’t change how much of your riding is hard, and you lose the fitness that protects you: in a large study of adults given treadmill fitness tests, the fittest had an 80% lower risk of dying from any cause than the least fit (Mandsager et al., 2018).
- ✕Hard days still uncapped
- ✕Loses the fitness that protects you
Head to head
| HELIOS 2.0 | Coach | TrainerRoad | Garmin | |
|---|---|---|---|---|
| Training load: hard days capped | ✓ | ✓ | ✓ | — |
| Strain: tracked day and night | ✓ | — | — | if worn |
| Sleep: tracked every night | ✓ | — | — | about 1 night in 3 |
| Nutrition: set to each day, counted in recovery | ✓ | rarely | — | — |
| All four on one plan, changing together | ✓ | if told | — | — |
| A coach watching all four | AI, every day | what you report | — | — |
Coaches, cyclists and clinicians
Nutritionist’s viewOliver, sports nutritionist10 years with endurance athletes▶ Watch Oliver’s video
Nutritionist’s viewLina SorensenSports nutritionist and endurance fuelling coach“Riders over 40 recover slower, and most plans ignore it. Seeing sleep and HRV each morning lets them fuel and rest for the body they have.”
“MARCO flagged ‘three days of suppressed HRV and elevated resting HR — recommend two days easy’. I ignored him, did the threshold workout, blew up. Now I listen.”
Camille Dufort · Verified buyer“MARCO kept me from blowing up at the wrong moment three different times across 28 hours of riding. Fueling reminders alone earned the subscription.”
Henrik Sørensen · Verified buyerThe world’s thinnest, lightest, slimmest smart ring. Beautiful, and made to be worn 24/7 for every occasion.
The world’s slimmest and lightest smart ring: 2.0 mm thin, 6.5 mm wide and 2.1 g of matt black titanium, so it stays comfortable on the bike, at work and asleep. It fits under cycling gloves.
It comes off because it’s bulky in bed or on the bars, or because it needs charging, so whole nights and days go missing.
Typically pretty ugly, and not something you wear to work or to dinner, so it comes off and the gaps start again.
Thin and light enough to sleep and ride in, beautiful enough for work and dinner, and 7–10 days a charge, with 3–4 weeks more in the travel charger. It stays on.
“Stupid as it sounds, this is the first wearable I haven’t taken off in 6 weeks. No bulk, sits flat under my work glove, charges in 45 min.”
Owen Bartlett · Verified buyer✓ 30-day money-back trial · 90-day results guarantee · Free shipping
Stock is limited: 100 HELIOS 2.0 rings this month
The verdict
A heart that’s been ridden hard for 20 years almost never has one problem. It’s hard days with no cap, food that doesn’t follow the training, recovery nobody planned, and nothing tracking how your body is handling it. Every other option here covers one of those at most. HELIOS 2.0 + THRIVE is the only one that looks at all four together and changes the plan when one of them moves. Get your heart checked, then get the load planned.
How many more seasons will you ride hard on a heart nobody is watching?
The Saturday ride at 80
Ask cyclists over 40 what they want from the next 30 years and nobody names a number. They want to still be on the Saturday ride at 80, on the wheel up the climb everyone races. A week in the mountains at 65 without a second thought. Riding with their kids when the kids are finally fast enough to drop them, and not letting them.
That’s what the hard days are for. Trained, fed, slept on and watched, they build those years. Left to chance, season after season, they’re what puts them at risk.
Here’s what the setup most of us run costs. Each piece sees one of the four at most, and none of them sees them together.
US list prices, checked August 2026.
HELIOS 2.0 with travel charger + the THRIVE app
For readers of this article: your 90-day guarantee is set on your heart numbers, not your watts.
- HELIOS 2.0 titanium ring + travel charger2.1 g, 7–10 days a charge, 3–4 weeks more in the charger
- Sleep, tracked every nightResting heart rate, HRV, skin temperature and blood oxygen while you sleep
- Strain, tracked day and nightEvery ride, every workday, every stress
- Every day’s food set to your trainingCalories, carbs and protein, counted in your recovery
- A training plan that caps your hard daysReal easy days and strength, in phases
- MARCO, the AI coach watching all fourExplains every change, and moves the plan when you ask
- Your 90-day heart targetSet with our team after your first week of nights
Stock is limited: 100 HELIOS 2.0 rings this month
Get HELIOS 2.0 →✓ 30-day money-back trial · 90-day results guarantee · Free shipping
Try it for 30 days. Get results in 90, or your money back.
Wear it for 30 nights. Not for you? Send it back for a full refund.
Your target is set on your heart, with our team, after your first week of nights: for example, resting heart rate back at or under your own baseline by day 90. Miss it and we refund you in full.
Plus a 2-year warranty, free shipping and a free sizing kit before you commit.
Before you buy
Do I need this if my heart feels fine?
Feeling fine is exactly when most cyclists stop paying attention. If you have symptoms, see a doctor first. Then let THRIVE plan the load.
Does it work?
It plans the four parts every other option on this list leaves out, and it tracks you every night, so the plan moves when you’re run-down. It isn’t a medical device and doesn’t diagnose anything.
Is it worth it?
Add up what you run now: a bike computer, a watch, a training app, a food app, maybe a coach. Each covers one part. This covers all four, with a 30-day money-back trial.
Why now?
Every season of hard riding without recovery planned in is another season of the same load on the same heart.
So you’ve got two options
Keep riding hard and hope your fitness is protecting your heart.
Put your training, food and recovery on one plan, tracked every night, with 30 days to send it back.
✓ 30-day money-back trial · 90-day results guarantee · Free shipping
Stock is limited: 100 HELIOS 2.0 rings this month