[null and void]

However, I've never heard of the heat effect on time, unless they mean due to an increase in kinetic energy?

Eh? Einstein himself explained it:

"How long 5 minutes is depends on whether you are kissing a pretty girl or sitting on a stove!"

[rlmorel]

"...How long 5 minutes is depends on whether you are kissing a pretty girl or sitting on a stove!..."

Might have to make that my new tagline...