Take 10 minutes to work your waist with one of our favourite trainers on YouTube, Rebecca-Louise [1]. You don't need any weights for this workout, which targets your abs, especially the obliques, and your back. Bonus: strengthening your core will help you stand taller too, and who doesn't want better posture. What are you waiting for? Just press play and work it!
Credits: On Anna Lorna Jane [2], Onzie [3], and APL (Athletic Propulsion Labs) [4]; On Rebecca: Asics [5], Lululemon [6], and APL (Athletic Propulsion Labs) [7]; Manduka Mats [8]