Week 2 - PHA workout 1 + Interval on Treadmill

2009-10-07 Wednesday

Location: CS gym
Time: Morning before work

Started my second of PHA workouts. As routine except now I added weights to the lunges.
I use 5kg for the first set and 6kg for the 2nd. The sets of 20 push-ups at the start of the workout are tough.

Location CS gym
Time: During lunch

Intervals on the treadmill. Warm up for 5 minutes at 9 kph. Then 800 metres at 12 kph followed by 400 at 8.5 kph. Repeated 4 times. Cool down doing:
- 1 minute at 7.2 kph
- 1 minute at 6.4 kph
- 1 minute at 5.6 kph
- 1 minute at 4.8 kph
- 1 minute at 4.0 kph

Week 2 weigh in:

Weight: 12st 8lb / 79.9 kg
Body fat 38.0 %

Weight is down but somehow my body fat is up 8.9%!

Question:
What the difference between intervals and HIIT? What makes an interval high intensity?