When you are stronger, you can do more.
I have found this to be true over and over again. I have seen it in others; why do they seem to be able to do (or be) so much? I have seen it in myself; recognizing how weak I can be and the tiredness that swims like a remora around that weakness...as well how much more capacity develops, how much more energy develops when I commit myself to working, growing, discipline, and gaining strength. This is certainly observable in athletic performances we see in the Olympics. These people can quite simply just do a lot more than I ever did and, while talent is certainly involved, most of it comes down to the fact that they worked a lot harder at something than I ever did (a lot harder). And, this made them stronger and gave them greater capacity.
I don't think this is limited to the physical realm either, as I have observed similar realities in others and in myself mentally, emotionally, and spiritually. When you are stronger, you can simply do more.
And here's the really good news:
When you do more, you learn more. When you learn more, you become more. When you become more, others want to do the same.