Either is safe: At your age either is safe although walking is easier on the lower back and knees. The object i get your pulse rate up to 80% of maximum for 20-30 minutes bout 5 times per week. At your age the target rate is about 150 beats per minute. If possible jogging on a soft regular surface such as a track is bes.
Answered 1/19/2015
4.2k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question