Squats and long runs pull your body in opposite directions. Brawnix reads every session you log, in plain English, and tells you when they collide, before you grind a session your legs can't cash.
You ran hard this morning, so drop today's squats to ~70% and skip heavy singles. Your legs are already taxed.
“ran 21k easy” · “5x3 back squat at 140kg”. No dropdowns, no exercise database spelunking, just lifts and cardio in one place.
Concurrent strength + endurance training collide in known, science-backed ways. Brawnix tracks both engines and spots the collisions.
A hard run before a heavy squat day? Brawnix says drop to 70% before you grind a session your legs can't cash.
Load ceiling the coach drops you to after a hard cardio day
How far back the engine looks for a collision
Race distances tracked, 5K to marathon
Compound lifts tracked: squat, bench, deadlift
Pick a cardio session, pick a lift, and see the exact call Brawnix makes. No account needed.
Free tells you what already happened.
Premium changes what happens next.
Every Brawnix athlete gets the full log, the weekly balance view, and insights after training. The Hybrid Coach goes further: it warns you the night before, adjusts your load in the moment, and keeps both engines building instead of fighting.
5K to marathon splits, squat, bench, and deadlift maxes. Brawnix tracks the numbers that matter for a hybrid athlete instead of burying them across five different apps.
Load trends, run pace over time, and a 30-day activity heatmap, so you can see whether both engines are actually building, not just what happened today.
Latest 5:06 /km — trending down over 8 weeks.
Tap a row to peek. The full friends leaderboard unlocks with the Hybrid Coach, global rank stays free.
Global Hybrid Rank is free for every athlete. Add friends and rivals with the Hybrid Coach to see exactly who you are chasing.
Both, that's the point. Brawnix is built for people who lift and are adding running, biking, swimming, or hiking (or the other way around). If you only do one, a single-sport app will serve you better.
The well-studied effect where endurance work blunts strength adaptations (and vice versa) when they're stacked badly. The fix isn't training less, it's sequencing. That's what the engine handles.
No. Plain-English logging is enough for the coach to work. Wearable sync (Apple Watch, Garmin, Strava) is on the roadmap and will deepen the analytics.
iOS and Android. This site is where you create your account and manage your plan. Training happens in the app.