The Ultimate 6-week at home workout - Muscle & Fitness magazine. The first two weeks of the routine will have you focusing on strength, maintaining your reps in the 6-8 range. You'll then slowly increase your rep range to 12 by week five and six to trigger hypertrophy. Within each workout, you'll want to keep your rest periods between 90 seconds and two minutes during weeks one and two. As for the remaining weeks, rest periods will drop down to one minute.