Depends a lot on how you ride. BMX-ing or technically demanding MTB-ing, with lots of out-of-the-saddle riding can give more of an upper body workout than running. But if you compare casual cruising to intense running, then running will give more exercise.
on a bike
There are lots of exercises you can do at home! Running around your neighborhood or on a treadmill, lifting hand weights, doing yoga exercises, dancing to music, or riding a bike (stationary or non stationary) are good ways of getting exercise at home.
A Triathlon.
bike riding is a good excercise but it does take a while
riding a bike and walking
Yes, riding a bike can get rid of celluite on your thighs and butt. Pilates, lunges, and running also help get rid of it.
He enjoys bike riding, horseback riding, and running. Bush rocks!!!!!
Riding a bike because your legs are doing more work then running.
Yoga, stretching, crunches, riding a stationary bike will all help.
Well just try doing anything that can keep you in shape like: Running, Push ups, Walking, Riding a bike, anything :).
cellular respiration
Running, swimming and riding a bike are examples of physical fitness.