I have been in combat sports for over 20 years, strength training for more than 30 years and have used a variety of mouth guards for various reasons.
This is the best mouthpiece I have ever used. I loved it so much, I purchased another two, one for my daughter and another for myself to keep on hand.
It’s not your generic sporting goods store mouthpiece, it’s high quality and durable, I bite down hard when I do really heavy weight lifting.
These my thoughts and views, for what it is worth, your teeth are important, protect them. Be smart and train hard, God Bless