Thanks for writing in.
I think you could have pulled a muscle due to the vigorous exercise or you could have cervical spondylosis
. The latter would be more probable if you're in your late 30s or older than that. At this stage, you need to wear a cervical collar
and put an ice pack on your neck. Take Tablet motrin
1 tablet every 6 hours with food to relieve the pain.
Please see a physician. You need a Xray of the neck definitely
Hope this helps