So i decided to start training my Deino according to the Hydreigon mixed build on smogon. For EV's it needs 104 attack EVs-240 Sp.A EVs and 164 Spe EVs. I started training this naive level 38 Deino near Nuvema Town where the patrats and lilipups are because they give attack EVs and you are guaranteed to find them there. I trained 23 attack EVs when i realized, macho brace doubles attack EVs. Then i stopped training. If i equip the macho brace now, will it give me 56 attack EVs or only double the EVs trained after i equipped it?
I dont want to end up going over the 104 EVs accidentally.
P.S. The Deino hasnt levelled up from the training so its still just potential effort values and this is my first attempt at EV training