You will see the greatest improvement in cardiorespiratory endurance by applying which of the following FITT Principle variables? 1 Frequency (5-7 sessions per week)
2 Intensity (51%-65% of maximum heart rate)
3 Time (50 minutes or less)
4 Type (weight lifting and stretching)

it hurts at first because " the cherry is broken" which is a thin layer of skin that breaks so the first time girls have sex it hurts and it bleeds but after the first time it does hurt again because the skin that ia torn does not break again/ grow back.

i don't think so because different teachers have different materials. tehy teach differently, unless you know for sure your teacher is the exact same as others. i would just contact ur teacher