Those stood at Stamford Bridge on Sunday could probably have done with a seat by the end of this breathless 90 minutes.
Safe-standing or not, resisting the urge to rise to your feet during this pulsating encounter was a challenge in itself.
A gripping football match accompanied by a red-hot atmosphere - just like those who have advocated safe-standing told us.
Chelsea trialled safe-standing for the first time in the Premier League, against Liverpool
The Blues put on a thrilling 2-2 draw with the Reds and the fans responded by roaring them on
Those lobbying for the provision of standing areas at football grounds would have watched on with their hearts full.