Results after I did this standing ab exercise every day for a week Jane McGuire — As a fitness editor, I love nothing more than a slightly unusual workout challenge — from dead bugs every day, to counting 5000 steps, and comparing the tracking capabilities of the Apple Watch and Garmin Forerunner 265, I’ve tried it all. Next up on my list of challenges is a popular standing ab exercise — the goblet march. To find out more, I grabbed one of the best adjustable dumbbells and got marching from...