@lungflexer: This is the cheat code to boost stamina. In 1 week i boosted my stamina from 10 min run to 40 min runs with no breaks . Real atheletes train lungs #stamina #athlete #lungs #asthma #fitnesstraining #boxingtraining #breathtraining #runtok #athleticstraining #fitnessmotivation #Running #footballtiktok #runner