{"id":83050,"title":"BODYSIM: Gain muscle and shed fat with a digital twin of your body","tagline":"Your body's app-based simulation that recommends nutrition and exercise to meet your goals.","body":"![uploaded image](/media/?type=post\u0026id=83050\u0026key=user_uploads/337500/1b2cc420-a97a-4df4-9066-c1974aff8915)\n\nWe're excited to announce a complete overhaul of BODYSIM from a tracking and modeling tool for your metabolism into an end-to-end fitness forecasting system. After launching our initial beta last fall, we discovered something crucial: our users didn't just need another tracking tool with cool graphs, they needed a complete solution that bridges the gap between goals and real results.\n\n# The Challenge of Getting Results is Still Valid\n\nIf you've ever tried to build muscle and lose fat, you know the frustration:\n\n* Conflicting advice from countless \"experts\" and unreliable information\n* Scattered data across different apps and devices, each telling a different story\n* The exhausting task of turning abstract targets into actual meals and workouts\n\n# The (new) BODYSIM Solution: Building Your Digital Twin\n\nAt BODYSIM's core is our advanced \"digital twin\" technology, combining sensor fusion with the science of metabolism and physiology to help you understand your true potential, using:\n\n* DEXA scans\n* BIA weigh-ins\n* 3D body scans\n* Fitness tracker data\n* Resistance training\n* Macro-tracking\n* Blood panel biomarkers\n\nThis comprehensive data integration unlocks hidden insights about your metabolism, including your Basal Metabolic Rate (BMR), Total Daily Energy Expenditure (TDEE), hormone balance, and body composition changes.\n\n# What's New: Tools are Not Enough - Get Our Users Outcomes\n\n### 1. Prescriptive Meal Plans: Chef-Created Meal Plans \u0026 Virtual Meal Kits\n\n* Library of high-protein, low-fat recipes with step-by-step instructions to make eating for transformation easy\n* Customizable weekly meal plans based on your preferences and goals\n* Direct integration with Walmart and Amazon delivery: order your entire meal plan with a few clicks\n* Simplified food logging with grouping, automated recipe creation, and easy to repeat meals\n\n![uploaded image](/media/?type=post\u0026id=83050\u0026key=user_uploads/337500/2ce2e1ea-b35c-40b9-9cf4-26d0cf6b18cb)\n\n### 2. Prescriptive Workouts: Comprehensive Workout System\n\n* 2,200+ exercises with detailed videos and instructions\n* Intelligent weekly split recommendations\n* Progressive overload tracking to optimize muscle gain\n* 3D scan integration to track individual muscle group progress\n\n![uploaded image](/media/?type=post\u0026id=83050\u0026key=user_uploads/337500/68860789-4915-47c8-a893-f0df1991b813)\n\n### 3. Fitness Forecasting: Advanced Integration Features\n\n* Scenario planning to understand how to achieve goals faster\n* Muscle group modeling that maps exercises to specific body measurements\n* Blood marker sub-models that connect nutrition choices to health outcomes with quantitative recommendations to make a change\n* Overtraining Syndrome (OTS) risk monitoring\n\n![uploaded image](/media/?type=post\u0026id=83050\u0026key=user_uploads/337500/5c951bcb-3162-4b27-9bba-e1d9521fed0b)\n\n---\n\n---\n\n# Why Trust Us\n\nThis is what we do; our core tech distills messy academic literature into simulations. We've deployed science-based models of consumer behavior and battery electrochemistry to enterprise. We built BODYSIM to guide our own fitness journeys. It worked. I put on 45 lbs of muscle, and my co-founder put on 25 lbs of muscle while losing 50 lbs of fat.\n\nAnd it worked in our alpha test (ages 29-69, 50% female). 8 alpha testers lost an average of 12.6 pounds in 3 months, and 4 alpha testers with a maintain goal changed \u003c1.4 pounds in 3 months.\n\nWe then had some beta amazing beta tester results: one lost 40 lbs, another gained 12 lbs of muscle, a female user gained 8 lbs muscle, a co-founder gained 10 lbs of muscle, and more.\n\n![uploaded image](/media/?type=post\u0026id=83050\u0026key=user_uploads/337500/04e38715-bc9f-4c3d-ab07-adacd8f1ee9f)\n\n![uploaded image](/media/?type=post\u0026id=83050\u0026key=user_uploads/337500/cc37c2ce-b3d5-40b2-a5ac-455b0dc85f93)\n\n# The Complete Package\n\nYour BODYSIM subscription includes:\n\n* Quarterly DEXA scans\n* Withings Body Scan scale\n* Monthly at-home blood tests\n* Escali food scale for precise tracking\n* Daily body composition updates\n* Live signals like Resistance Training Intensity to adaptively steer to your goals\n* Personalized exercise and nutrition recommendations\n\n# Join Us\n\nJoin us in revolutionizing how people transform their bodies. With BODYSIM, you're not just getting another fitness app - you're getting a science-based, personalized system that guides you from where you are to where you want to be.\n\nReady to transform your body with confidence? Visit [bodysim.com](http://bodysim.com) today.","slug":"LbW-bodysim-gain-muscle-and-shed-fat-with-a-digital-twin-of-your-body","created_at":"2024-08-14T20:27:45.090Z","updated_at":"2026-05-25T00:30:24.252Z","total_vote_count":24,"url":"https://www.ycombinator.com/launches/LbW-bodysim-gain-muscle-and-shed-fat-with-a-digital-twin-of-your-body","share_image_url":"https://www.ycombinator.com/media/?type=post\u0026id=83050\u0026key=user_uploads/337500/1b2cc420-a97a-4df4-9066-c1974aff8915","company":{"id":12553,"name":"Well Principled","slug":"well-principled","url":"https://wellprincipled.com","logo":"https://bookface-images.s3.amazonaws.com/small_logos/6c59ac5aca8c4a74c69ab15c408544b91f24e98e.png","batch":"Summer 2019","industry":"B2B","tags":["Artificial Intelligence","Hard Tech","Neurotechnology","Robotics"],"search_path":"https://bookface.ycombinator.com/company/12553"}}