If I fill a 5 Gallon glass water bottle with very hot water will it change the temperature in a cool room by a few degrees?

My room is drafty. I don’t know if it is the windows or what. I don’t want to turn the heat on when it really isn’t that cold, and the heat will just make it too warm. Space heaters are something that spook me as well.

So now I am looking for alternative mild heat sources that won’t require my covering myself in blankets during the evening while I am up and moving around.

So, do you have any ideas? Space heater suggestions? Exercises to warm the blood e.g. side saddle hops.

This was all history, do you think the water bottle will work?