you become inspried by all the knowledge you have gained during the HSC 303 course and decide to start a running program.
why when you stop running does it take a while for your breathing to return to normal:
post exercise oxygen consumption
repay oxygen debt: oxygen taken in above resting values after exercise
O2 becomes available, binds to H+ ions and clears lactate
how long till all physicolgical systems return to normal? 24 hrs
how long till intramuscular PCr and ATP are restored? 2-3 minutes