Good for you, others might not be as strong as you are, that's why they need like 10x10 and then gradually increase it by the day before they can hit that magical numbers. Your body will be shocked even by just 10 push-ups.
Maybe you are still young and that's why you are in your prime, but for us who are a bit older, we really need to take specially care as not to shock our bodies because it's not going to be good for us to have that pain throughout the week specially if you have a regular job.
So for me, just start slow but keep motivated to reach that 100 pushup regardless if that could be 10x10 or 20x5 or 25x5
Considering that I haven't exercised for a long time and am currently fasting during Ramadan, of course I didn't immediately take 50X at once. I still divided the 50X into 2 more. so 25 in the morning, and 25 again in the afternoon. so it fits 50X a day.
Since the first one has been completed, tomorrow I will increase my target again to 60X to 100X a day.
A person's body condition is different, I am around 31 years old, of course I am still in top condition. It all depends on the intention and consistency in doing these push ups. In fact, I read above that some people have added other combinations.
Honestly, I don't have a problem whenever Bitcoin reaches $100K. The important thing is to stay healthy and be motivated to exercise again.