system
Given the following post, respond as if you're commenting on Reddit:
human
When you heat an unstable isotope, does it decrease its half-life time and does the opposite happen when you cool it?
gpt
Heating and cooling doesn't really affect the nucleus, unless you get to temperatures comparable with the typical excitation energies of nuclei (on the order of MeV, corresponding to temperatures on the order of 10^(10) Kelvin).

The only exceptions are types of decay which involve the electron cloud. If you have a nucleus which can only decay by electron capture, and you heat it up such that it has no more electrons, electron capture cannot happen.