I'm not the best with kinesiology, but the width should not really change how your shoulders are involved. Width shifts the focus from chest (wider) to triceps (narrower), but I don't think it would alter shoulder recruitment much... Let's ask the experts, though: Damer, TheRaven, neilarey.

Anonymoose great question and Baston thank you for tagging me here. The answer is that the video is both right and wrong Let me explain, yes, what the guy in the video says is correct, wide grip push ups can, potentially, put an extra load on your shoulders. However what wide grip push ups are supposed to do is load your chest so that your pecs get stronger and it's your chest you really need to work. So the load is the critical element here. If you are loading your chest and you can feel it working then you are OK. If however you extend your arms to the point where your chest is no longer taking the load or if you are doing too much, too soon and your chest is not ready to take the load, then you are putting too much pressure on your shoulders which can be an issue.

This video explains that:



So, really you need to Listen to Your Body. I hope this helped

So to do a propper wide push up you should feel all the tension in your chest. If you are not, then you are doing bad to your shoulders. Is this 100% correct? My shoulders should be safe?

Billy1997 You should feel some work in your shoulders too, they are after all, the pivot points you are working. But there should be a great deal of work coming from your chest to make that movement happen.

If you feel any pain or other "weirdness" that's probably a good indicator you should check your form or stop.

Thankyou Damer for clarification.

Damer TheRaven hello guys, some days ago, when I got up at morning, I did some wide push ups,without any good warm up,and then I got a bad pain about T1 or T2 backbone.
and when I move my neck forward, its pain gets ok,but when i make my neck straight it pains a lot
can u help me know is it from my tendon or disk?

Hibye it is most likely from tendons, especially seeing how you did no warm up. A push-up takes as much as 75% of your body's weight on your shoulders and triceps so doing them without a warm up can cause tendon injury. Give it some time, exercise with a warm-up, always and be careful with form and you should soon be back to your old self. I hope this helps.