Chances are you have a co-worker or lifting partner who praises his or her diet—keto this month, intermittent fasting next, maybe a dabble in something called the carnivore diet after that. But trying new diets other people swear by can be more exhausting than today’s battle ropes workout—so we’ve tapped a handful of nutritionists to weigh in on whether or not six of the trendiest diets right now are worth your time.

For this list, we’re doing a full breakdown of:

  • Intermittent fasting
  • Low-FODMAP diet
  • Intuitive eating
  • Carnivore diet
  • Keto diet
  • High-protein vegan diet

Read below for the pros and cons of each diet, and what type of athlete each one is designed for.