Arnold

The problem

My health information was spread across training and diet plans, wearable data, notes, and my calendar. Each source was useful on its own, but none could put the full picture together or help me decide what to do next.

The approach

I built Arnold around the decisions I make repeatedly: how to train, eat, recover, and change the plan when real life gets in the way. I wanted something that knew the plan, understood what was happening, and helped me decide what to do.

How it works

Arnold reads my longer-term health context, current plans, health data, calendar, and a daily record of what actually happened. He can compare the plan with reality, spot changes, make recommendations, and explain why I may need to adjust something.

Key decisions

• Focus on the decisions I make repeatedly, rather than every possible health question.
• Keep what I planned separate from what actually happened, so Arnold can compare the two.
• Use Arnold to support my judgment, never as a substitute for medical advice.

Current use

Arnold remains in active use and has led to material changes in how I manage my health. I have used it to rewrite my diet and training plan as my needs changed. Its flags also prompted me to seek physiotherapy for a neck problem that proved considerably more serious than I had initially understood.

What I’ve learned

Arnold became useful once he could compare the plan with what I was actually doing. I learned to improve him through specific corrections, rather than trying to design the perfect health system upfront. I also trust his recommendations because he explains why he is making them and gets better when I correct him.