Cambridge Professor Shares Surprising Trick to Open Jar Lids

A mathematics professor from Cambridge University has introduced a novel technique for opening stubborn jar lids without requiring physical strength. In a recent TikTok video, Professor Hannah Fry outlined a method that emphasizes a unique approach, claiming it relies on “brains over brawn” and “breath over biceps.”

In her demonstration, Fry addressed a common frustration: the inability to open jars due to tightly sealed lids. She explained that a simple breathing technique could alleviate this struggle. “You know when you can’t open a jar? There is actually a scientifically legitimate trick here that means you will never have to struggle again,” she stated, holding a jar to illustrate her point.

Fry’s method involves taking a deep breath and exhaling forcefully while twisting the lid. This process, she explains, transforms the torso into a stable base, allowing for more effective force application when opening the jar. By increasing internal pressure through breathing, the body becomes more rigid, which helps counteract the twisting motion needed to unscrew the lid.

The professor elaborated on the mechanics of this technique, noting that the arm, when unsupported, tends to move around instead of exerting force effectively. “Your arm is this floppy little noodle that’s lolling around,” she said. By stabilizing the torso, the arm is better equipped to apply the necessary force.

Fry highlighted that this technique mirrors practices used by weightlifters. She explained that when lifting heavy weights, individuals instinctively use similar breathing methods to enhance stability and strength. The muscles engaged during a forced exhale, such as the internal obliques and transverse abdominis, are crucial for providing the support needed during both lifting and jar opening.

The video has garnered numerous responses from viewers who have tried the technique. One user remarked, “I always do the breathe out method and it really works. Now I know the reason that’s cool.” Another noted the similarity to lifting techniques, stating, “We don’t just breathe out during lifting; it’s also why we wear lifting belts. We brace against the belt for stability.”

Others have pointed out that this approach is not only beneficial for jar opening but is also applicable in various sports. A viewer mentioned, “The term is Valsalva breathing. It’s why weightlifters often pass out after the heavy lift because they usually aren’t breathing during the lift to push against the lifting belt.” This technique, widely recognized in athletic training, emphasizes the importance of controlled breathing during physical exertion.

Fry’s insights have opened up an engaging dialogue about the intersection of science, strength, and everyday challenges. As viewers experiment with her advice, many are encouraged to share their experiences in the comments section, eager to discover whether this scientific method indeed offers relief from a common kitchen nuisance.