Walking should be a variable activity level based on speed

[I-am-Erk]

Is your feature request related to a problem? Please describe.

Walking is currently defined as a Moderate level activity. At 4.5 METs, this is probably too much most of the time. However light, at 2 METs, is too light. Walking speed changes depending on your activity

Describe the solution you'd like

Walking should range in METs from around 2 to 5 METs depending on walking speed and situation. This does not include the upper ranges of walking METs, because those will later be covered by things like extra activity for walking up hills or carrying extra weight.

Describe alternatives you've considered

We could work an entire system where carry weight affects METs here, but while we do need that, it's bigger than just walking.

Additional context

I also think we need to adjust the values for Moderate activity down to 4 METs, and add a Brisk activity that is 6 METs.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions. Please do not 'bump' or comment on this issue unless you are actively working on it. Stale issues, and stale issues that are closed are still considered.

[kevingranade]

This issue has been mentioned on Cataclysm: Dark Days Ahead. There might be relevant details there:

https://discourse.cataclysmdda.org/t/how-exerting-is/26040/7