10k pushups a month

I would imagine you chest definition would look very good. Look at military members, while they don’t gain a lot of mass in boot camp, they definitely come out with a solid chest.

Never did the math before but at 400/day that lands me around 12k/month.

Good for definition and helps prevent onset bitch tit if you’re an older baw.

A ton of guys gain weight in base training from the sheer volume of push ups and food

I’ve done it 3 times. If you focus on making sure you are doing them right, chest to floor and locking out your arms, you will see results in your chest and abs.

It’s not going to be mind blowing, but you will see results. It’s only 30 days, not like it’s 12 weeks of focus.

Shoulders and triceps should tone up, as well. You're going to gain little to no volume, however.

I did the challenge twice. My chest became more vascular, and the pecs looks more separated, if that makes sense.

The main takeaway was that I became very efficient at pushups. So much so that months later I can bust out a set of 100 with very little effort.

The good news is that all the gyms are closed, so what else are you going to do? Do your 333 reps for 30 days and let us know the result.