Gym Workout Plan #3: Instead of high knees do 5' warm up on treadmill, and at the end do 20' HIIT on treadmill followed by 5' low intensity for cool down before stretching. my custom printable workout by @WorkoutLabs #workoutlabs #customworkout

Gym Workout Plan #3: Instead of high knees do 5' warm up on treadmill, and at the end do 20' HIIT on treadmill followed by 5' low intensity for cool down before stretching. my custom printable workout by @WorkoutLabs #workoutlabs #customworkout

Original article and pictures take https://health.com site