When it comes to exercising your body and living a healthy lifestyle it is important to understand how it is affecting our bodies. When we start doing cardio and building muscle strength we immediately feel the difference. Here are some of the things that happen to your body when you start your daily regimen. Exercising is the best type of habit to get into. Replace the bad ones with good ones! It all starts with you and a Cal Spas Fitness Swim Spa!