HIIT workouts are structured in intervals of intense work periods cut with short rest periods. This is excellent for building strength & improving your cardiovascular endurance.
Tag Archives: plank
30 Day Plank Challenge
The 30 day plank challenge from 30dayfitnesschallenges. Feel the buuuuuuuurn!
30 Day Plank Challenge
Become a plank beast in 30 days or your money back.