This 10-minute standing abs workout from fitness trainer Katja Puanecki, who goes by Katja Believe on YouTube, uses a mix of marching, twisting and kicking exercises to workout your upper and ...
However, coach Raneir Pollard has an easy solution: a simple five-minute ab ... workout. Or you can try it out as a simple way to start the day feeling energized. This class is set up a bit like ...