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For the most reliable fitness and nutrition information on social media, it is best to follow accredited professionals, such as certified personal trainers and registered dietitians, who provide evidence-based advice rather than sensationalized trends. Here are some highly regarded, science-based fitness and nutrition accounts across various platforms: Fitness & Training These accounts focus on safe, effective workout routines, proper form, and injury prevention, often with a scientific backing. Jeff Nippard (YouTube, Instagram: @jeffnippard) A pro natural bodybuilder with a degree in biochemistry, Nippard effectively bridges the gap between scientific research and practical, actionable training and nutrition advice for muscle building and fat loss. Dr. Mike Israetel (YouTube: Renaissance Periodization) An expert in sports physiology, Dr. Israetel provides in-depth, no-nonsense information on hypertrophy (muscle growth) and diet principles, ideal for those interested in the science behind training. Jordan Syatt (Instagram: @syattfitness, YouTube) A strength training coach known for his no-nonsense, evidence-based approach to fat loss and building lasting fitness habits, often debunking common fitness myths. Natacha Océane (YouTube, Instagram: @natachaoceane) With a background in biomedical science, she offers educational content that emphasizes performance and strength, focusing on a holistic, science-backed approach to fitness rather than quick fixes. Jeff Cavaliere (YouTube: ATHLEAN-X) A physical therapist and former head strength coach for the NY Mets, Cavaliere provides science-based workout programs and injury prevention tips. Adriene Mishler (YouTube: Yoga with Adriene) For those interested in yoga and mindfulness, her channel offers a wide array of accessible yoga practices for all levels, promoting holistic well-being. Nutrition & Dietetics These accounts are run by registered dietitians or clinical nutritionists who offer practical, healthy, and non-restrictive eating advice. Dr. Rachel Paul (Instagram: @collegenutritionist) A registered dietitian providing simple weight loss and healthy eating tips, especially helpful for busy individuals. Abby Langer Nutrition (Instagram: @abbylangernutrition) A registered dietitian who is known for debunking nutrition myths and diet culture "BS" with a practical, no-fad approach. Kelly LeVeque (Instagram: @bewellbykelly) A clinical nutritionist and best-selling author who focuses on blood sugar balance through whole-food recipes and practical wellness advice. Angie Asche (Instagram: @eleatnutrition) A registered dietitian and board-certified specialist in sports dietetics (CSSD), she consults with elite athletes and provides excellent resources on fueling for performance. EvaClaire Synkowski (Instagram: @optimizemenutrition) A certified nutrition specialist who offers a logical, approachable science-based take on nutrition through her "800g Challenge" and podcast. Ilana Muhlstein (Instagram: @ilanamuhlsteinrd) A registered dietitian and creator of the 2B Mindset program, she emphasizes an "eat smarter, not less" approach to weight management and balanced eating.