Over the years I’ve done every workout, every trend, weights, cardio, orange Theory, p90x, Insanty etc etc. For the last month- have done nothing but a 100 push ups a day using g the Perfect Push up. And as I got stronger I added about 50 regular push ups. have never been so cut and toned in my life. 10 minutes tops if that and hard cut and chisled. I’m 48. Go figure!