In support of @Realfoodieclub's Core Program posts, here are some tips on how to avoid neck strain when doing core exercises:
1) Don't tense your neck; keep neck muscles relaxed while crunching.
2) Fold your arms across your chest instead of putting them behind your head.
3) Make sure your neck is not jutting out. Your head, neck and abs should be in one straight line.
4) Concentrate on the ceiling to prevent your head from lifting forward. Imagine that you have an apple tucked under your chin – allowing for space between your chin, neck and chest.
Doing core exercises doesn't have to be a pain in the neck!