I don't really feel stronger - the dogs can still pull me across a street and I couldn't really help lift the generator, but I must be getting stronger.
Day 1 - number of pushups completed = 0
Day 9 - number of pushups (these are knee ones) completed = 1.5
Day 16 - number of knee pushups completed - set 1, 6 ; set 2, 5; set 3, 4 = 15
Yep, must be getting stronger.