Cardiovascular alone may help you lose weight, but as you age, maybe not. As we age our muscles atrophy approximately 5 lbs. of muscle tissue every ten years. This is due to the aging process, poor nutritional habits, and lack of a resistance program. Five pounds of muscle is equal to burning or not burning 300 calories daily. The next time you hear someone say “my metabolism is slowing down as I get older” now you know one of the reasons why. If you start or maintain a weight training program along with nutrition, you’ll be able to increase about 5 lbs. of muscle tissue in approximately 3 months to a year depending on your genetics and other factors.