Answer:
Probably not, otherwise a lot of people would not be here...
Most likely Heat Exhaustion or Heat Stress, However, Heat Stress is less likely to occur. So the Answer would be, the second one. Heat Exhaustion, remember that the body can only take so much heat before the heat causes it to need rest and rejuvenation.<span />
An adult should have a full set of 32 permanent teeth.
The answer to your question would be 2 hours
Hope I helped ~~Laurel