This is a topic most cyclists do not think about until something goes wrong — a stress fracture, a crash that breaks a collarbone too easily, or a DEXA scan that comes back with numbers nobody expected. Cycling is brilliant for your heart, your lungs, your mental health. But your bones? They barely know you are exercising.
Bone responds to mechanical loading. When you run, jump, or lift heavy things, your skeleton absorbs impact and compression forces. That stress triggers a remodelling process — old bone gets broken down and replaced with new, denser material. On a bike, your body weight is supported by the saddle and handlebars. There is almost zero impact, almost zero compression through the spine and hips. Your cardiovascular system is working hard, but your bones are on holiday.
The research backs this up. Studies comparing cyclists, runners, and sedentary controls consistently find that long-term cyclists sit closer to the sedentary group for bone mineral density — particularly at the hip and lumbar spine. That is a sobering finding for anyone who rides as their primary exercise.
The fix is not complicated. Two or three gym sessions a week built around compound lifts — squats, deadlifts, lunges — plus some impact work like box jumps or skipping gives your bones the stimulus they need. You do not need to train like a powerlifter. Moderate-to-heavy loads with good form will do the job.
Nutrition matters too. Calcium, vitamin D, and simply eating enough total calories to support both training and bone remodelling. Under-fuelling is rampant in cycling and it hits bone health hard, especially in female riders.
Get this right now and your skeleton will thank you in twenty years.
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