I have cut back on carbs & sugar & have gained a healthy weight. I'm 49 & want to tighten up my abs. Does walking help to reduce waist size? Also, I have a simple ab machine where I can do sit ups, leg lifts, etc. I have degenerative disc disease & the Dr suggested not to do excersises involving twisting my body to the right & left while doing the set ups.
What can you suggest?