5 min warmup, 1 min. intervals at 10 with 1 min. rests at 9. Max HR at 152. Stay at this level for week or two, then up to 2 min at 10, 1 min. at 9.
5 min walk warmup, alternated jog at 5.0 1 min 1 min walk at 3.2.
did 6x50s, tried to keep HR low. Booted out early for aerobics class.