In 2025, people use AI as a fitness coach: lifters record sets and have Gemini 1.5 Pro extract JSON (exercise, sets/reps/weight) and form critiques, sometimes paired with TTS for live cues. Grok 3, ChatGPT, Claude, and GPT-5 generate plans—meal macros, 4–5-day routines, sprint modules—and adapt weekly from user feedback. Many prompt AI to act as a physical therapist: intake on goals, pain (1–10), injuries, equipment, and target activities; output step-by-step rehab with safety rules (e.g., stop if pain >4/10) and progress templates. Day to day, users request 45-minute beginner programs, troubleshoot lifts (e.g., overhead press), handle plateaus, and swap foods to reach protein targets; some report specific outcomes (e.g., glute activation) and let the coach remember sessions to adjust intensity. Privacy-minded prompts share age/sex/height/weight for treadmill plans while limiting other data.
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Grok 3 is quite good at making meal plans, calculating macros, and workouts It's at the level of being a competent AI personal trainer, nutritionist, lifestyle coach Once it has video capabilities for exercise tutorials, it's game over for 90% of the fitness industry