Regain health
Rapidly tap Plus and Minus alternately between rounds until a chime is heard. Your health will increase at the start of the next round.
After knocking down your opponent, rapidly tap Plus and Minus alternately. Mac will pump himself up and regain some energy while the opponent is down.
Press Minus during the dialogue between rounds. Doc will use a Remedy Bar and Mac will regain some energy. This can only be done once per opponent.