BODY TEMPERATURE IS CURRENTLY NOT IN THE MOD AND WILL NOT BE UNTIL MINECRAFT 1.17! IT IS NOT A BUG OR AN ISSUE!
Tough As Nails is currently in a "soft relaunch" for 1.16.4, with only thirst available for now. We will not be updating this page or the wiki properly until after Minecraft 1.17 releases, which is also when we'll be re-adding body temperature (And other features). You can give testing feedback for the 1.16.4 version on our Discord server: https://discord.gg/GyyzU6T
You may use this mod in a modpack as long as you only redistribute official builds uploaded to CurseForge by us, do not sell it via any means (Exclusive access from donations, etc.), you give credit (Linking back to this page), and you do not make any changes to the mod aside from config files.
Tough As Nails is also now a closed source mod, licensed as All Rights Reserved for 1.16.4 and all future versions. Previous versions are still licensed as Creative Commons BY-NC-ND 4.0, and the source for those versions can be found at https://github.com/Glitchfiend/ToughAsNails. Localizations are also still accepted at the repo listed on the TAN-public branch. We will also be providing other modders with access to the source on a case-by-case basis. Please ask Adubbz about it in our Discord server.