The most serious injuries were to Stricklin's back, which took months to heal.
斯特里克林受伤最严重的是脊背，等了好几个月才痊愈。
2
Teachers often tell beginners to lift their sitting bones in forward bends because beginners tend to round their backs in such poses, which can lead to disk compression and lower-backinjuries.
老师通常告诉初学者在前屈中尽量抬高他们的坐骨，以免弓着腰，因为那样的话可能会伤害到下背部。
3
For example, knee injuries sometimes occur because running strengthens the back of your legs more than the front of your legs.