What are men being asked to contribute in terms of their pain relief I wonder? [[https://www.dailymail.co.uk/news/article-12605737/Women-childbirth-urged-swap-gas-air-water-injections-save-PLANET.html https://www.dailymail.co.uk/news/article-12605737/Women-childbirth-urged-swap-gas-air-water-injections-save-PLANET.html]]