The next big diet trend is starving yourself and calling it .. “biohacking”???; Finnair to begin weighing passengers; Fitbit – toast because smartwatches like Samsung’s Gear Sport now exist?; Celebrities helping raise millions by running NYC marathon; High-protein vegetarian dinners that aren’t just [boring] salads; Common terms every runner should know (Fartlek? Bonking?); The start up that lets you pay for gym time by the minute; The Sirtfood celebrity diet that’s taking over the U.S.; Rucking: the simple fitness technique that will change your weight loss routine (for good).