Will mark as brainliest if question 14 rich wants to improve his flexibility before tryouts for his school's tumbling team. he currently lifts weights several times a week. rich should focus on which overload training principle? a. frequency; adding additional training days to his workout b. intensity; increasing the effort expended during his workout c. time; increasing the length of his workouts d. type; performing a different activity to achieve his goal question 15 lyla walks three times per week for 45 minutes at a speed of 4.0 miles per hour. she wants to increase her time. what should she do? a. walk at 4.5 miles per hour. b. walk for 50 minutes. c. walk four times per week. d. walk up and down more hills. question 20 joaquin experiences a sharp pain in his side when he runs for an extended time. what can prevent joaquin from experiencing side stitches in the future? a. controlling his breathing while running b. stretching on non-running days c. wearing tight compression clothing d. wearing proper-fitting shoes to run