Early on, Newt (Machine Gun Kelly) has to use his powers of on-demand thermoregulation against Art (Jamie Foxx). In nature, thermoregulation is the involuntary mechanism that helps us keep our body temperatures regulated. With the help of power — the name of the pill responsible — Newt is able to fully combust. However, power doesn't give him the ability to heal (and it's clear that he's used power before from the looks of the burn scars on his skin).
Newt isn't the only character in Project Power with thermoregulation. On the other end is the woman we see at the party, who sadly freezes to death due to not being able to reach the right temperature within the chamber.