May 24 2018
A registered dietitian drank beetroot juice for a week before running a half marathon to gauge how the nutrient-rich fuel would affect her.
Here’s how paying attention to the “calories burned” on your fitness tracker can actually cause you to overeat…
It’s long-run Saturday and you logged 12 miles in 2 hours. Your fitness tracker says you burned 1,200 calories. However, women typically burn less, closer to 85 calories per mile, says Nashville, Tenn.–based sports dietitian Mari-Etta Parrish. So in reality, you burned about 1,020.
From that number, subtract:
Total: 140. That’s the excess you’re working with—about a glass of wine or a couple of squares of dark chocolate to add to your usual daily calorie intake.
If you are going to weigh yourself, as long as you see the scale for what it is—a tool to measure pounds lost or gained (not your self worth)—it can help you figure out if you’re eating too much. For runners doing long runs on the weekends, you’ll likely gain a bit of water weight from the sodium in sports drinks and gels. So don’t be alarmed when the scale is up on Sunday and Monday. Parrish recommends waiting until Wednesday for a weekly weigh-in.