Try to remember boxing takes year to learn ,,,every boxer as there different styles its finding the opening that matters ,,
when ever i coach any part of boxing i will alway explain why your doing the combination your learning,,, so then there is more interest in practicing it because you know why your throwing that combo & when to use it
its doesn't realy matter what the routine is ,if you want to get better you have to learn
fuck the fitness learn How ,When & why,,,,,,,A clever boxer will beat a fit boxer