Most people don't care enough to make a difference. Most people aren't going to buy that new thing you're selling. Most people are afraid to take action. Most people are too self-involved to do the generous work you're hoping for.
Push-ups - there's more than one way to do them. However you choose to do them, make sure you're using proper form. This article discusses push-up variations and how to get the most out of this bodyweight exercise.
Asymmetrical Push-Up: One-arm push-ups may feel like they& beyond your ability, but this asymmetrical push-up forces you to work one arm more than the other making it good prep for that impossible-sounding challenge.