I don't practice in aim labs or something I just do a warmup routine in range but I just wanted to clarify that will it have the same affect if I do it before playing competitive rather than doing it as soon as I wake up?

Recently I have been started to aggro peek when I hear an enemy walk up to the angle Im holding, due to the ability to maybe pick of a kill and then retreat. But I started to question if that is the correct play, over just waiting for the...