Leo Valadez—February 15, 2026✓ Verified purchase
Rock hard at first, then just turns into clumps. Afterwards they stick together but are pretty hard to chew. Rest your jaw quite often until you’re able to chew it for longer. I go for 2 hours and my jaw feels amazing afterwards. Pretty difficult at first but the result by the end is damn satisfying. Both sides of my jaw feel much bigger after just 3 sessions. Remember to alternate sides as it’s easy to subconsciously keep it on one side. Read more
CGDX3—October 11, 2025✓ Verified purchase
I’ve got ADHD and tend to grind my teeth, so I’m constantly chewing gum to keep myself from doing it. This means I burn through regular packs like crazy. GYMGUM is a godsend. One piece lasts me 2–3 hours, the flavor stays strong for at least two, and it keeps that firm, satisfying chew the whole time. It’s hands-down the firmest gum I’ve tried and gives the best jaw workout. a legit part of my gym/wellness routine now. The spearmint flavor actually lasts instead of fading after a few minutes, and the ingredients are clean; no aspartame or sucralose like the usual stuff. Overall, this is the best “functional” gum I’ve found: durable, great-tasting, and way more effective than anything else out there. Read more
Ian Thomas—November 26, 2025✓ Verified purchase
Most importantly - it works. My jaw muscles have steadily become more defined since I started chewing this gum. The flavor is fine, like gum in general it fades pretty quickly (but that's not why you're chewing this). My biggest complaint is the initial chews. The hard shell is tough on the first bite, I think I could chip a front tooth if I didn't use molars. But more importantly after that it kind of breaks apart into lots of little chunks before it recongeals after awhile. You could swallow small pieces and reduce the size if you aren't careful. Overall I'm happy with the progress. I don't want to buy fitness equipment for my mouth. This is a much better alternative. Getting another brand soon to compare but I would recommend this to someone looking to improve their jaw strength and definition. Read more
quinton bennett—November 18, 2025✓ Verified purchase
The flavor was gone in two minutes. It is hard to chew. Only could handle one piece. Read more
Amina—November 30, 2025✓ Verified purchase
really good, tough enough to feel like your getting a workout, flavor is amazing, made my mouth water fr Read more
kelvin—March 1, 2026✓ Verified purchase
Hard to chew, perfect for a yaw workout. Read more
Saul—December 29, 2025✓ Verified purchase
It’s very good if your just staring out it’s pretty hard but after a while it gets easier to chew if you want it to get harder again you cold just drink something cold to make it harder. It’s still a bit on the pricier side but it’s worth it Read more
Ty Y.—December 13, 2025✓ Verified purchase
Good for a jaw work out? No probably not lol. The flavor runs out crazy quick and sometimes its really hard to chew and get started but feels a little tougher than normal gum after you get to chewing. I have a habit of bitting and chewing on my tongue a lot and chewing gum helps, but regular gum gets gross and doesn't last as long so this is a good alternative. Its also good for keeping your mouth/throat moist especially if you wear a mask all day. Good product that lasts a long time, it just uh isn't good for its intended purpose. Read more