Carrie WiattCarrie Wiatt is the nutritional guru who is behind the diet program included with P90X. She is a nutrition specialist, chef, educator, and author of several books including Portion Savvy: The 30-Day Smart Plan for Eating Well, Eating by Design, and The Diet for Teenagers Only.

With the P90X extreme home fitness training program, Carrie Latt Wiatt contributed her 20+ years of experience in the diet and nutrition industry to develop a systematic eating approach that works hand-in-hand with the P90X program.