Scientific AI Workout Plan Generator
Generic AI prompts often produce 30+ sets of junk volume. Configure frequency, equipment, and biomechanical exclusions in seconds: Our generator crafts a precision prompt based on Schoenfeld (2016) & RP Volume Landmarks for ChatGPT, Claude, or Gemini.
RP Volume Landmark & Junk-Volume Check
Audit your weekly working sets against the 4 scientific thresholds (MV, MEV, MAV, MRV per Dr. Mike Israetel & Schoenfeld, 2017). Eliminate junk volume and verify push/pull symmetry.
RPE & 1RM Target Calculator
Calculate your estimated daily 1RM factoring in RPE/RIR (repetitions in reserve per Zourdos et al., 2016) plus Epley, Brzycki, and Wathan. Includes target weight projections for your next working set.
FFMI & Natural Muscle Potential
Determine your lean body mass (LBM), normalized FFMI at 1.80m per Harvard research by Kouri et al. (1995), and estimate how much lean muscle mass you can naturally achieve.
Warmup & PAP Ramping Calculator
Prevent lactate fatigue during warmups: Calculate your optimal ramping pyramid using Post-Activation Potentiation (Sale, 2002) for maximum CNS priming prior to heavy working sets.
Olympic Barbell Plate Calculator & 2D Visualizer
Instantly determine symmetrical barbell plate loading per side for 20kg, 15kg, and specialty bars in official IPF/IWF competition color codes.
What is the MaGymus Lifter Lab? +
The Lifter Lab is a suite of evidence-based online calculation tools for dedicated strength athletes and bodybuilders, grounded in peer-reviewed research by Schoenfeld, Israetel, Zourdos, and Kouri.
Is my data stored on servers? +
No. All calculations run 100% locally in your web browser with zero tracking and zero server storage.
Tired of manual gym calculations?
MaGymus handles all these calculations automatically in the background of your workouts: auto warm-up pyramids, deterministic Epley progression, 11-dimensional RP plan audits, FFMI curves, and multi-gym machine normalization โ 100% offline on your iPhone.