◎ Join the millions completing the Zen Challenge Series! ◎ 0 to 200 Squats in 8 weeks! ◎ Featured on Glamour Magazine, Yahoo! 's Appolicious, Popsugar Fitness, Apple's "What's Hot", Apple's "New & Noteworthy", and doctor recommended on healthTap! "I've always hated air squats! But this program breaks it down into small sets with a 1 minute rest in between.