A vibe-coded breathwork timer does the job

This weekend I forgot my Garmin smartwatch in the car and, with the heatwave, was too lazy to walk down the street to fetch it. For my daily breathing exercise I thought — someone must have vibe-coded this into a website.

Within my first search query I stumbled upon BreathworkTimer.net, a beautiful, most likely Claude-generated website. It does the job for box breathing and has a nice feel to it UI-wise, which seems to come with little effort when Claude takes over the UX design. The site also offers other breathing techniques (4-7-8, coherent breathing, Wim Hof) with generic info about each, but without citing any sources.