By JESSIE INCHAUSPÉ FOR THE DAILY MAIL PUBLISHED: 20:47 EST, 11 March 2022 | UPDATED: 02:57 EST, 12 March 2022 You might think the secret to weight loss is counting calories, cutting carbs or spending hours on a treadmill. But I have discovered it could be as simple as deconstructing that lunchtime tuna sandwich so you eat the salad first, then...