Today I have come up with a new way of doing pushups - I get my wife to lay down on me while I do this, so her head stays close to mine, and her feet stay on my legs. She weighs roughly 120 lbs, and I managed to do 10 pushups of those with good amplitude. Is that a good result? Can I consider that I did pushups with 120 lbs on me, or it would be less since her weight is distributed over my body?