WOMEN 01/10/2013 10:41 am ET 10 Reasons Why Morning Sex Is The Best Sex BuzzFeed SHIFT 1. You can skip your morning trip to the gym. Half an hour of sex burns almost 150 calories, so keep your Pilates pants buried at the back of your closet WHERE THEY BELONG. Download Read more on BuzzFeed SHIFT Subscribe to the In(formation) email. The reality of being a woman — by the numbers.