In boxing; you have to develop a punch, combinations, fakes and learn to protect yourself against getting hit! If you do not have the right stomach muscles or in bad shape; it only takes one punch to bring you down. Getting hit in the head will do the same if it is a direct and a strong punch. Jabs will make you dizzy and a combination may bring you down too. Just make sure you are not hit so hard that you fall backwards to the ground; land on your head. You will either end up in the hospital or in bed for a couple of days if not a week. This is very rare but it does happen if it a punch that knock you out in the air before you land on the ground. It is fun to spare; but a real bout is very scary since it is a real bout and each of you are trying to pretty much destroy the other. It is very, very tiresome 3 minutes.