Question: how often to stretch to do splits?
Answer: Each day during the challenge you have to do stretches numbered 1 through 5 (out of 30), your foundational stretches. Then at day 6, you'll do 1 through 5 and 6, and on day 18, you will do 1 through 5 and 18, and so on and so forth, holding each stretch for one minute and stretching for a total of 10 minutes a day.