Lukewarm???

Some of you may be wondering...what is lukewarm water? Yeast breads usually call for lukewarm water. Lukewarm water is somewhere between 100 and 105 degrees. However, I NEVER measure the temperature. Lukewarm is just slightly warmer than room temperature. I just feel it and when it is somewhere between warm and cool, but slightly on the warm side, I use it. It is about the temperature of a baby's bottle. NEVER GET IT TOO HOT...if you are going to err either way...err on the side of slightly too cool. Water that is too hot will kill your yeast...FRUSTRATING!