>In the case of this 7 Minute Workout, just keep going harder - add a weight belt, incline the pushups and work towards full handstand pushups, etc. I think we

>In the case of this 7 Minute Workout, just keep going harder - add a weight belt, incline the pushups and work towards full handstand pushups, etc. I think we must be in violent agreement since this is the very definition of variability. Incline pushups are a different exercise. So are handstand pushups. Also there is some limit that you will reach if you go balls to the wall for 7 minutes as it relates to intensity. Increasing time at the same level of intensity necessarily means you do more work and get more benefit. You can't increase intensity doing the same exercises all the time as there is a finite limit of how much stuff you can do in 7 minutes.