Does Sanji even work out

[Warmmedown]

Zoro lifts daily

 

[SSJ2]

No. He definitely does training of some sort but I don't think weights are part of his regimen.

 

[Yoshi]

He also probably eats very healthy and nutritious meals to get stronger.

 

[Warmmedown]

That doesn't let you beat a yonkou commander. Unless the "meal" is prepared by Hody.