BCKLE exists because training apps gave you a programme, then forgot you were the one running it. Athletes ended up injured, under-fuelled, burnt out. There had to be a better way.
"The plan should serve the body. Not the other way around."Jack Levent, Founder
Training apps got something right. They put structured coaching in front of runners and triathletes who couldn't have afforded an actual coach. That access mattered.
The trouble was, they could prescribe the training — they couldn't see who was doing it. So athletes got hurt. They hit a wall with no obvious next thing to try.
You've only got one body. So we should nourish it, and shape the training around it.
Those apps couldn't do that. They only knew the calendar. They didn't know today's HRV had dropped. They didn't know about the dodgy night's sleep, the niggle in the left calf, the under-fuelled day before, the heat, the stress, the day the body's just off. So when any of that was in play, the schedule kept asking for the same effort it had asked for yesterday. And the body, eventually, broke.
Push past what your body can absorb today and you don't end up further forward. You end up in a rubbish position with the goal further away than when you started. You feel awful and you didn't even achieve the thing you were aiming at. That's not training. That's just damage with a calendar attached.
"Make the body work for the training, or make the training work for the body. That's the whole game."
These aren't aspirations. They're the rules the engine follows when it decides what today's session should look like.
Every reading, every modification, every fuelling cue answers to your body before your calendar. The plan should never be the thing that breaks you. We'd rather pull a session than push you into a rubbish position.
When today's session doesn't fit, today shifts. Threshold goes to Thursday. The race is still on the calendar. Both moves are training. Neither is failure.
Dan Geisler writes every session. The engine adapts those sessions to you: readiness, fuelling, niggles, race goal. Nothing about your plan is generated from a prompt.
BCKLE is small. That's the point. The voice in the app is the voice of the people building it.
Founder · Building BCKLE
Every session in the BCKLE library is coach-written. Every adaptation rule is signed off before it ships. Each morning, the engine takes that coaching and personalises it to you, with the reasoning shown, in plain English. The app sounds like a coach because a coach wrote the words. And the rules don't sit still. Dan reviews them as the engine reports back from real athletes.
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