In reply to coreybennett:
If you are trying out something new in your training go easy to begin with so you have the movement and technique dialled first before you go for your max resistance.
Take a few days rest and ease yourself back into things.
Check out the "cat pose" and "cobra pose" yoga stretches this could be included briefly into your warm up/down if you find you are susceptible to aches as pains in your core.