New reasons to get on your bike
New research suggests cycling can boost immunity and testosterone levels in middle-aged men
When it comes to staying healthy, those middle-aged men clocking up hours on their bikes might be onto something.
Cycling isn’t just gentle on joints - it also appears to slow down aspects of physical and mental ageing. Recent research - including our own - shows that hopping on a bike may help preserve muscle quality, boost immunity, improve mood and protect long-term health.
“Cycling helps to maintain muscles and prevent them from being weakened by fat infiltration, delaying some of the effects of ageing,” said Alister Hart in a recent article for The Times. Here’s our review of the recent findings…
Stronger, younger muscles — even in midlife
The Exercise for Science study published in BMC Musculoskeletal Disorders compared 28 active recreational cyclists with 28 sedentary men of the same age. The research revealed some striking differences. The cyclists had:
Larger and stronger leg and glute muscles
Much lower levels of intramuscular fat, a harmful fat stored inside muscle fibres
Healthier, more “youthful” muscle tissue overall
This matters because intramuscular fat accumulates as we age, driving conditions like sarcopenia (age-related muscle loss), instability, and increasing our risk for type 2 diabetes, obesity and heart disease. The cyclists’ reduced fat infiltration - particularly in the gluteus maximus and gluteus medius -suggests cycling may significantly delay muscular ageing.
Cycling keeps your hormones and immune system youthful
The Times gathered more good news from the University of Birmingham Institute of Inflammation and Ageing, where Professor Janet Lord examined the health profiles of older cyclists. Reporting in Ageing Cell, her team found that older cyclists had lower body fat, lower cholesterol levels, higher testosterone levels than average for their age, and a far more youthful immune system, producing protective T-cells at rates seen in much younger adults. These findings highlight cycling as a powerful tool in maintaining hormone balance and immune resilience well into later life.
A proven boost for mental health
Cycling isn’t just good for the body — it’s a tonic for the mind. According to researchers at the University of Edinburgh, people who cycle to work are 15% less likely to need medication for anxiety or depression. A separate study at the University of East London examined recreational cyclists aged 35 to 50 who rode at least an hour a week through parks and green spaces. Speed wasn’t the goal; instead, riders said the biggest benefit was the psychological shift that came from “getting away from it all.” Stress levels dropped noticeably, thanks to the combination of gentle exercise and time in nature.
Is there a downside?
Many men worry about the effect of cycling on sexual or prostate health. But a large report in the Journal of Urology comparing cyclists with swimmers and runners found no significant long-term differences in sexual or urinary function. Short-term numbness can happen on long rides. Cycling expert Phil Cavell from Cyclefit — and author of The Midlife Cyclist — recommends standing out of the saddle for at least 20% of your ride, wearing padded shorts, and etting properly fitted for the right saddle shape and width: a saddle should feel right immediately — no “breaking in” required.
Finding the balance
While cycling is exceptional for cardiovascular and muscular health, it doesn’t strengthen bones or the upper body. To round out your fitness routine, add:
Weight-bearing exercises like skipping or jumping
Upper-body resistance work (bands, gym machines or bodyweight exercises)
In summary, cycling delivers an impressive list of anti-ageing benefits: stronger muscles, better metabolic health, youthful immunity, lower stress and improved mood. For middle-aged men looking to stay fit, mobile and mentally sharp, few activities offer such powerful returns with so little joint strain. Pair it with resistance and weight-bearing exercise, and cycling becomes a cornerstone of healthy ageing.