A. This is a common problem among many people. The abdominal crunch and Bicycle crunch are two fantastic exercises. I particularly like the bicycle crunch because it not only works the abdominals but also the obliques and intercostals (love-handle area). They also hit the hip flexors and extensors. Crunches are great because the lower back remains supported by the floor or a bench reducing risk of lower back injury. However, the average human head weighs in around 10lbs (Some may weigh less depending on how much air they have in their head ha ha... JK) This can place strain on the neck and trapezius muscles.
A simple remedy I have found that works well with both myself and clients is to use a rolled up towel. Simply grasp each end of a towel, roll it to make a tube shape then place it around the lower back section of your neck. As you crunch up (and/or twist if doing bicycle crunches), gently use the towel to support the neck. This technique is also effective for full sit ups as well.
Have a fitness or nutrition question? Send me an email or text and it may be featured in an upcoming Weekly News and Update email and on my Website Blog!