Guides

Practical, plain-language guides to training, eating and sleeping lean.

PRODUCT

What is Lean · 薄肌? Features, pricing and who it’s for

Lean · 薄肌 (LumaFit) is an iPhone fitness app combining workout logging, AI photo calorie estimates, water and sleep tracking, an on-device pull-up counting exam and playful Lean degrees. Every non-AI feature is free.

TRAINING

Your first pull-up in 8 weeks — a beginner progression

Can’t do a single pull-up? Progress through dead hangs, scapular pulls, slow negatives, band-assisted reps and inverted rows to your first strict pull-up, then build to six in a row.