I have done that only my workout was you increase the weight every rep so you do 20 reps @ I started 50lbs then 18 reps @ 60 lbs and so on. so you added weight but dropped rep by two! I saw fast results. and if I couldn't add anymore weight I'd just try to break my record the next day. But I was on a very high protein diet and ate 6-7 meals a day considering my Protein drink as a meal replacement. that's what my personal trainer had me do.