Some advice about my C25K (Read 546 times)

Hi, I am in the middle of week 04 of my C25K program, and since I've been recording my workouts with a HRM I'd like to post the graphs here and check if you can see something wrong with them. I am 27 and using these zones: - Heavy to maximal intensity 90-100% - Moderate to heavy intensity 70-89% - Light to moderate intensity 60-69% And these are the graphs: Week 01: Day 1, Day 2, Day 3 Week 02: Day 1, Day 2, Day 3 Week 03: Day 1, Day 2, Day 3 Week 04: Day 1, Day 2, Day 3 Can you see something wrong with them? Should I worry about the 92-93% HR intervals in week 04? (I mean, it's only five bloody minutes!) Any kind of advice is appreciated