[24] Bibliography [edit] 100 Ways to Boost Your Metabolism (2007) ISBN 9780979402708 Personal Trainers' Guide to Earning Top Dollar: A Cutting-Edge Guide to Maximizing Your Income as a Personal Trainer (2009) ISBN 9781606790687 Shape21: The Complete 21 Day Lean Body Manual (2012) ISBN 9781619841413 Endurance Planet's Big Book of Bravado: Tales of Extreme Endurance (2012) ISBN 9781619841345 Get-Fit Guy's Secrets to a Better Workout (2012) ISBN 9781466814226 Weight Training for Triathlon: The Ultimate Guide (2014) ISBN 9781936910656 Beyond Training: Mastering Endurance, Health & Life (2014) ISBN 9781628600476 The Low-Carb Athlete: The Official Low-Carbohydrate Nutrition Guide for Endurance and Performance (2015) ISBN 9781517371531 Christian Gratitude Journal: A Daily Guide for Enhancing Your Mind, Body and Spirit (2017) ISBN 9780692809518 The Forest (2019) ISBN 9780999722701 Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging (2020) ISBN 9781628603972 Fit Soul: Tools, Tactics & Habits for Optimizing Spiritual Fitness (2020) ISBN 9780999722732 Boundless Cookbook (2021) ISBN 9780578822006 Endure: Tools, Tactics & Habits for Spiritual Stamina (2021) ISBN 9780999722763 Spiritual Disciplines Journal (2021) ISBN 9780999722749 Boundless Kitchen: Biohack Your Body & Boost Your Brain with Healthy Recipes You Actually Want to Eat (2023) ISBN 9781401977740 Boundless Parenting: Tools, Tactics & Habits of Great Parents (2023) ISBN 9780999722770 Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging, Updated and Revised (2025) ISBN 9781628605396 Personal life [edit] Greenfield married his wife, Jessa, in 2003

Th17 cells are essential for the immune response against extracellular bacteria and fungi because they generate IL-17
People with severe kidney conditions: Theoretically, increased fluid retention (even minimal) could stress compromised kidneys
If you have Hashimotos, you should pay close attention to your selenium intake and use supplements if necessary to boost your levels
Liver-expressed antimicrobial peptide 2 (LEAP-2), the endogenous noncompetitive allosteric antagonist of the growth hormone secretagogue receptor 1a (GHSR1a), was recently identified as a key endocrine factor regulating systemic energy metabolism