Healthy in Body. Strong in Spirit. PRAYFIT 33-DAY TOTAL BODY CHALLENGE is a 33-day system designed to reshape your body in 33 minutes a day over 33 days. The workout includes a combination of strength, cardio and core for highly efficient calorie-burn, plus weekly "PrayFit Minute" faith-based devotionals to inspire your success. Perfect for any fitness level – your goal is to improve steadily each day, one rep at a time, building your fitness and bolstering your faith.