(Source: Google Trends)

* Lots of you have asked for a breakdown of products or services whose popularity is in retreat. Here’s our first attempt at that.

The Anti-Signal: Last week, creditors of Tough Mudder filed an involuntary petition to push the obstacle course race (OCR) into bankruptcy. Founded in 2009, the firm has had over 5m people participate in its popular OCR events but has lost money in every year other than 2015, according to court filings.