According to the centers for disease control and prevention, drug overdoses are the leading cause of death for u. s. teens, accounting for more than one in three deaths in this age group.

If you were running a marathon, which type of muscle fibers would be most useful to you? a. slow-twitch b. fast-twitch, type i a c. intermediate-twitch, type ii b d. slow-intermediate twitch, type i b select the best answer from the choices provided. a b c d