Recently read about High Intensity Interval Training. I have only been actively exercising for the last 3 months or so. I am a 57 y.o. woman, no health issues that I know of, and no health insurance for Dr. exams and lab work. Exercise and nutrition plan IS my health insurance plan.
So, my question is, is HIIT considered safe for older people? I am no stranger to hard exertion since I garden every summer, digging up huge beds, hauling 40 lb. bags of compost, and moving established trees and bushes--no easy feat. But I am a little scared of HIIT. I regularly work up a sweat with the aerobics dvd's I use--my Heart Rate goes up to about 160 for a minute or two with those. And I usually start out my walks with about 1 minute or so of a hard run (up to 172 BPM) to burn up glycogen a bit faster, then walk at 128 BPM for 30-40 minutes. I exercise 6 days a week now, alternating walking/cardio with resistance. If I try HIIT do I do it before my 30 minute walk or on strength days? I tried the Afterburn Energy System routine one day last week (from Allwen? somebody), but now not so sure. Advice anyone?