Hi girls, I recently (about a week ago) started lifting dumbbells and doing other exercises to tone up. Earlier in the week, I noticed that whenever I did ab exercises, I was sore the following day. Last night, when I did ab exercises, I didn't feel as much strain as I used to, and this morning, no soreness. Did I do something wrong? I was pretty tired last night after I finished with the dumbbells, though. Ahh! Thanks so much!