The number of push-ups I can do is dismal.
I have tried over the years to increase the number and have received to pieces of advice.
Start easy and try something like a raised bar or railing and work your way down or start on your knees until you strengthen your arms.
Keep persisting, even you can initially only do a few, you will eventually be able to do more.
I've tried both approaches but never seem to get anywhere more than around 15 and then collapse in a heap.
What can I do to increase the number and be able to do more without it being a major struggle as neither of the above methods seems to work?