lol Bradley, my jaws could crush a 2 by 4 for all the clenching I have done with my 4 kids.
I also don't like a pipe to be over 50 grams. I clench all the time so my absolute limit is 60 grams and I only have a few of those. The heavier ones I will have to hold more often even though my jaw muscles are in good shape.
One thing I have learned is that the stem design is a huge deal. Well crafted stems with comfortable buttons make clenching so much easier. Some stems are so poorly designed that no matter how light the pipes is, it will hurt your jaw.
Here is a pic of the most comfortable stem I have ever clenched. I have 16 pipes with stems the exact same or similar to this. When I buy pipes now, I pay attention to the design of the stem.