For the last year or so at the gym I've been using ab machines that let the user select the amount of weight resistance. Over time I've worked up to using a pretty high level of weight resistance using these machines. Sometimes I also do exercises where I hold a weight in one hand and tilt at the waist forward and to the side, while lowering the weight and contracting my ab muscles.
Now I'm thinking that I've built up too much in my abs and sides, making my waist look blocky and less narrow, sort of diminishing the "V-shape" of my upper body.
Has anyone else had this issue? Would you recommend just stopping using the heavier resistance when doing abs? If I don't work these muscles as much in the future, will they atrophy and get smaller (as any other muscles would) and eventually make my waist more narrow looking again?
Thanks in advance!