For the oxygen created and for the ridding of CO2 that is "used up" in the process
If they want to gain loose weight then they would need to eat well, so taking in a normal amount of calories but exercising more. To gain wait, take in more healthy calories but not that much of an extreme work out.. Hope this helps.
Reduce the amount of vegetables or eat raw nuts
not sure but has to be one of those
E. to set a goal of reaching her optimal weight
