Answer:
Slow-twitch muscles are able to use oxygen more efficiently than fast-twitch muscles.
Explanation:
Hope it helps! :P
Grains provide a great amount of carbohydrates.
As you age, you realize that the way you eat might effect how long you live. Eating too much or too much bad things can give you lots of medical conditions, and you realize that as you get older.
Answer:
What is the context for this situation?