Just 15 minutes a day and you'll achieve astounding results!
syksyinen kimppu. tähän lisäksi valkoista?
"HIIT workouts are quick and dirty, never lasting more than 30 minutes including a warm-up and short cool-down,"
Warm up your abs and lower back with this bodyweight at home core warm up routine. Get your heart pumping and prepare your core for a strengthening workout. http://www.spotebi.com/workout-routines/bodyweight-at-home-core-warm-up-routine/