keep warm
stay warm

After my first winter I had an abiding interest in staying warm.

The greenhouse effect is not a bad thing by itself - it's what allows Earth to stay warm enough for life to survive.

It stayed warm all the rest of the first week.

I cannot think of one argument against staying warm and dry.

Both fighters may need to find a way of staying dry and warm.

For Peter, staying warm was about the closest thing he had to a religion.

Getting rid of heat was usually a bigger problem than staying warm.

And they would have to find some way of staying warm.

I don't even sense the bodies staying warm, for that matter.

But there are probably more within the keep, staying warm.