Experienced athletes work out so much they are in a plateau phase, it is harder for them to increase fitness
What/who it effects, what does the path to the outcome look like.
Due to changes in weight, height with age, as well as their relation to body fatness, BMI levels among children and teens are expressed relative to other children of the same sex and age.
Burning of most materials, air fresheners and other spray chemicals and candles, driving, using appliances.
