I collected data after cycling and running for 6 years. One thing was how cold or hot I was and the weather. I kept notes and had a guide on what to wear for myself. Now I've made it into a little web app.
NESH is a Northern English dialect term for somebody who feels the cold a lot.
Optimisation solvers are complex and incredibly powerful pieces of software. However, there are lots of different options and choosing which to use can be a daunting task.