Book
General Health Systems
A systems-based framework for thinking about health in context. Provides the conceptual foundation of Zoos.
Best for:
Anyone looking for a durable, non-dogmatic way to approach health and physical capacity.
Tools shaped by the same approach
Zoos expresses its ideas through a small set of focused tools.
Each product applies the same underlying philosophy—systems thinking, real-world constraints, and clear decision-making—but at different levels of depth and specificity.
They can be used independently. They work best when understood as parts of the same whole.
Book
Coming Soon
Testosterone Effect
A focused exploration of testosterone as a functional outcome. Shifts attention toward understanding how hormonal state expresses itself in daily life.
Best for:
Men who want a clearer, more grounded way to think about testosterone alongside work, training, and recovery.
Decision support tool
In Development
Zoos App
A lightweight tool for tracking signals, recognising patterns, and supporting better decisions over time. Improves feedback quality without coaching or gamification.
Best for:
People who want ongoing support for behaviour, metrics, and decision-making without surrendering autonomy.
How these fit together
- → General Health Systems establishes the foundation
- → Testosterone Effect applies that thinking to a specific domain
- → The Zoos App helps translate understanding into day-to-day decisions
You don't need all three.
You also don't need to engage with them in a particular order.
They exist to support clearer thinking—not to lock you into a system.
Choosing where to start
If you're unsure where to begin:
- → Start with General Health Systems for orientation
- → Move to Testosterone Effect if hormones and energy are a priority
- → Use the Zoos App if you want better feedback loops over time