Aerobic activities include walking, jogging, bicycling, dancing and swimming. Anything that you do that involves the large muscle groups, which you can sustain for thirty minutes or longer, is considered aerobic. It should be done a minimum of five days a week for at least thirty minutes each session.
It should be intense enough to get your heart rate up, but not so intense that you become short of breath. In other words, you should be able to have a reasonable conversation during the activity, but you shouldn’t be able to recite the Gettysburg Address without becoming winded.
Above all, it should be an activity you enjoy. If you hate the treadmill, don’t chain yourself to it. Find something that you love and make it a can’t-miss part of your daily routine.
Alas, some of us have to work harder than others to maintain slenderness. Consider it a character-builder. Remember, also, that by the discipline and sweat required to lower your setpoint, you are also strengthening your heart, lowering your blood pressure and LDL cholesterol level and probably prolonging your life.
By Neale Cranwell