intensitylisa
Cathlete
Which do you like better and why? Is one more effective in burning calories than the other or is the only difference between the two the rest periods?
Jann said:Check this out, this may explain it for you.
The Complete Guide to Interval Training [Infographic] | Greatist
Check this out, this may explain it for you.
The Complete Guide to Interval Training [Infographic] | Greatist