What works for weight loss is to burn more calories in physical activity than you consume in food calories — an excess of energy used compared to energy consumed.

#1 No Pain, No Gain
Exercise does not need to hurt to be good for you. In fact, if it does hurt you’re probably doing something wrong.
#2 Excessive Sweating While Exercising Means You’re Not Fit
In fact, it’s just the opposite. Sweating during exercise is a sign of an efficient cooler. An athlete who has adapted to keep the body core cool during exercise will shunt blood to the skin’s surface more quickly and release heat from the body.
#3 If You Stop Exercising, Your Muscles Will Turn to Fat
Fat and muscles are two different tissue types. One can not convert to the other. The truth is that muscles atrophy when not used.
#4 You Can Increase Fat Burning By Exercising Longer at a Lower Intensity
It really isn’t important what percentage of energy during exercise comes from fat or carbohydrate. What matters at the end of the day is how many total calories were expended.
#5 If You Exercise, You Can Eat Anything
If you try to make up for poor nutrition by exercising, you are going to be disappointed.

#6 If You Don’t Work Out Hard and Often, Exercise Is A Waste Of Time
Nothing could be farther from the truth. Research shows that even moderate exercise, such as walking and gardening a few times a week, can have tremendous benefits.
#7 Exercise Can Fix All Your Health Problems
While consistent exercise can make a huge difference in quality and quantity of life, it can’t fix everything.
#8 Weight Training Will Bulk You Up
Many women use this excuse to avoid weight training. What they don’t realize it that weight training is often the easiest and quickest way for women to lose body fat and increase muscle definition.
#9 To Build Muscle Requires Massive Amounts of Protein
There is no scientific evidence supporting the popular belief that athletes require massive amounts of protein.
#10 The More Exercise The Better
Of course you can get too much exercise. Many top athletes give in to this myth, and many pay the price with injury, illness and depression.