If your cat eats dry food, he's more prone to constipation than a cat who eats wet food due to the decreased moisture content. Your vet will do a simple test to determine your cat's hydration level by pinching a fold of skin on his shoulders and pulling up. If it snaps back into place when released, he's well hydrated.
Comparing the Calorie Burn. In terms of calories, a 30 minute treadmill running session at 6mph for an 155lb adult will burn around 350 calories. The same size adult will burn around 260 calories in 30 minutes on a Spin bike at a steady pace. However, a Spinning class is much more intense so you can expect to burn anywhere from 400-600 calories if you push yourself.
A leisurely hour-long bike ride burns around 298 for a person who weighs 155 pounds. But, according to the American Council on Exercise, the average indoor cyclist can burn up to 19 calories per minute, for a total of 1,140 calories an hour. Riding a stationary bike indoors isn't just good exercise -- it's an effective way to burn off fat.