The President's Council on Physical Fitness and Sports cautions that unless you are convinced of the benefits of fitness and the risks of unfitness, you will not succeed.
Patience is essential.
As you exercise, pay attention to what your body, including your feet, tells you. If you feel discomfort, you may be trying to do too much too fast. Ease up a bit or take a break and start again at another time. Drink fluids on hot days or during very strenuous activities, to avoid heat stroke and heat exhaustion. Before you start a fitness program, you should consult a physician for a complete physical, and a podiatric physician for a foot exam.