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 Barb MacGillivary, NASM Elite Trainer, Fitness, answered. The amount of calories burned in a spin class can vary depending on how much effort you put into it and the levels of intensity during class. On average an individual can burn between 500 - 800 calories per hour. The amount of calories you burn can also vary based on your body weight. An individual who weighs more will burn more calories per hour than someone who has less body weight.