Hi Craig,
Today my treadmill went like this:
5 minutes: warmup @ 3.5 mph
HIIT: 30 seconds @ 6.0 mph (x 3)
Rest: 90 seconds @ 3.8 mph (x 3)
10 minutes: cooldown @ 4.0 mph
All together, I went 1.36 miles in 21 minutes. Not quite 4 mph average. I'm pretty sure I'll be increasing all of those numbers before long - I just didn't want to overdo it and screw something up (or fall off the treadmill
).
Any suggestions?
~jc228