Respuesta :
The answer to this question would be: B.crunches
Crunches will train your body core muscle and increase your strength. Running is an aerobic training that will increase endurance. Stretching is training your muscle flexibility. Sprinting is similar like running but it trains your short-term speed, not the long-term endurance.
Crunches will train your body core muscle and increase your strength. Running is an aerobic training that will increase endurance. Stretching is training your muscle flexibility. Sprinting is similar like running but it trains your short-term speed, not the long-term endurance.
