Do not use your phone (or set it to airplane mode) during your workout to improve focus and session efficiency.

noli's read

This advice is based on the principle of 'monotasking' rather than multitasking, which is often inefficient for the brain. Studies show that using a phone (texting, social media) during physical exercise decreases the intensity of the session and can impair stability and balance. Research also confirms that mental fatigue induced by intense cognitive activity just before exertion can degrade physical performance. The concept of 'dopamine' mentioned by the creator reflects a behavioral approach aimed at avoiding overstimulation to maintain long-term motivation. While using a phone for music has less of an impact, interacting with notifications distracts attention and consumes cognitive resources. In summary, this recommendation is largely supported by observational and experimental studies on attention and athletic performance.

the sources

No named source held this one up — that absence is part of the verdict.