Bro, do more workouts and don't rely on those sprays..

u mean numb agent? u will regret later. it makes u feel nothing and u hardly get turn on and enjoice the sex.

try masturbate few hours in advance then bang her later. that will help

Go to gym is muscle building or train your stamina?

Do something like HIIT workout, and trust me, just one month your wife will loves you more.