Warnings probably work better on products you’re putting in your body. If you have blackened lungs on the cigarette packaging I can’t imagine choosing to smoke.
On social media, you basically have to destroy my experience for me to stop using it in the same way. All effective options are terrible: ads, microtransactions, auto-playing unexpected sounds, nonresponsive interfaces.
US Olympics is probably being overly cautious ever since Taliyah Brooks collapsed from exhaustion when they refused to delay a US Olympic trials a couple years back due to extreme heat.
Taliyah was on pace to make it to the Olympics until that happened.