Well a bit over exaggerated but finally had my 2 weeks surfing holiday in warm water 27C without a wetsuit. My ribcage was rubbing against the board too much and I was getting bruises/ blood rash. I was in so much pain so I had to take a big breathe and hold it in to puff my abdominal up which stops my ribcage clashing with the board. I launch myself into paddling position on the board. I landed on the board too hard and it felt like I put too much pressure to my internal organs that I felt a sharp pain in my lungs. I'm perfectly fine now but has anyone done anything as stupid as this?
I just remembered when I first started surfing, I would also hold my breathe when I paddle for waves. I would get a headache straight away, maybe because of the lack of oxygen. Not sure if I still hold my breathe now but I don't get the headaches anymore.