5 Reasons Your Ab Routine Isn’t Working

4. Side bends with weights

Forget about side bends with weights: dumbbells, kettlebells, and pancakes! The waist from such power bends will not narrow, the “sides” will not go away from this. 

On the contrary, visually “pumped up” oblique muscles will expand the waist area, rather than narrow it. The silhouette will turn into a “straight”, without attractive feminine curves.