"Effective Exercises for a Slim Waist and Strong Core at Any Age"

Personal trainer Rose McNulty shares 10 exercises to target abs, obliques, and deep core muscles for a toned waist in your 30s. The exercises include bicycle crunches, leg raises, flutter kicks, planks, mountain climbers, Russian twists, V-ups, side plank hip dips, standing side crunches, and alternating toe touches. These exercises, combined with overall strength training and cardiovascular exercise, can help slim your waist and build core stability.