I understand the importance of not drinking your calories. I was never warned about not using a straw. I saw people on here mentioning that they were told not to. The only thing I've read is that you drink fluids a lot faster if you are drinking through a straw. My question is, unless I was drinking something with calories, what does it matter. If I'm drinking a diet tea with zero calories, why does it matter.

No straws here either bc of air intake, but I do use a Camelbak and LOVE it. Yes, it has a straw, but the way the bite valve works, there is always liquid in the straw so you aren't taking in a little air with the beginning of each sip. It also helps me get in fluids a lot faster so it's easy to reach my goal.