Does it really make sense to do serious ML in a laptop though? my ML/DL training rig runs pretty hot all the time, I could use it as a space heater in the winte

Does it really make sense to do serious ML in a laptop though? my ML/DL training rig runs pretty hot all the time, I could use it as a space heater in the winter. Even if I could have all its processing power in a notebook I definitely wouldn't want it on my lap.