Exercise is better performed early in the morning or in the evening.It should not be done on a full stomach.

People who have followed a sedentary or quiet lifestyle should begin an exercise program slowly.

It is not important how quickly one advances to a higher level of fitness. Becoming fit eventually and maintaining that fitness is what matters.

A slow and easy start can avoid musculo-skeletal injuries. Be sure to thoroughly warm up before beginning and cool down gradually by stretching, appropriate to the exercise. This is very important to prevent cramping and other discomforts.

Choose activities that you like.Be realistic about what you can do.Exercising in a group is better than doing it alone because it makes it a social event and encourages continuous participation.

One has to consult a doctor before starting an exercise program. Also stop and check with your doctor right away if you develop sudden pain, shortness of breath, or feel ill.

Choose your method of exercise carefully! Make sure it is suitable for your body type. Avoid high-impact events. Certain exercises should not be performed when people have certain diseases.
For eg:. people with diabetic retinopathy should not perform exercises that involve bending forward too much or standing on their head. People with weak heart should not perform strenuous exercise. Those who have had a heart attack cannot perform any exercise other than walking for a certain period after recovery.

Be very certain to remain hydrated by continuously drinking water supplemented with vitamin C and electrolytes while exercising.