If you think clip-in pedals are bad, I can assure you that the old-style toe-clips, toe-straps and shoe cleats were a lot worse.
I have only had cramp in my legs on one day of my life. Whilst some of the details are hazy, I can remember I was 16 and it was the day I left school prior to sitting my 'O' levels. I can also remember we'd had PE that afternoon and it was my last organised, and refereed, game of football. I can't remember the score, but I can recall tackling the best player in the school, (who only came to our school after being expelled from his previous one), and then as I ran towards goal the grass came up to meet my face as he hacked my legs away from behind. It must have been bad, because even before I hit the ground the whistle blew and the ref sent him off - and that took some doing in a final PE lesson for 16 year olds at a tough Staffordshire comprehensive school in the early 1980s.
With the weather so good, when I got home I immediately set out on my racing bike - I'm not even sure I had a drink. All was well until I crossed the river Tame at Elford, and started the short climb out of the valley. Right at the top, where the gradient is around 1 in 9, one of my calves locked solid with a lot of pain. I managed, somehow to undo my other foot and stop.
To my surprise, on my 'locked' leg all the calf muscles were rigid and pulling the skin taught in a V section away from the bone. I wasn't sure what to do, but massage didn't seem to work so I punched (quite hard) my muscles towards my leg bones. I appreciate, as some of you have had extensive medical training, that this almost certainly wasn't the right thing to do, but it did work and my muscles returned to normal and the pain went.
The next bit, however, really wasn't the right thing to do with hindsight, as I decided to carry on riding away from home as if nothing had happened. It looked like I'd got away with it too, until I reached Honey Hill on the climb out of the Mease valley. It's a modest hill, again around 1 in 9, but around 10 metres from the summit the calves of
both legs locked rigid with cramp. With my legs rigid I couldn't bend to undo either toe strap, so I had to make a decision about which side I was going to fall off onto. I chose the grass verge on the left as the safer option, but what I didn't appreciate, in the split second I had to think about it, was that the wheat field up to the verge, (there was no fence or hedge), was nearly a metre lower than the verge. So not only did I fall onto the verge, I continued to roll (more than once) into the wheat field - still attached to my bike - ending up on my back with my legs and the bike wheels in the air poking out amongst the wheat heads.
And there I remained for a full ten minutes, as I couldn't release myself from the bike until the cramp had dissipated, laughing at the utter stupidity of it all. I wasn't laughing quite so much as I grovelled the near 13 miles home on weak and painful legs.
I'm not sure what the moral of this story is. Whilst on the face of it, it would appear to be a simple one of the perils of dehydration in summer. Alternatively, the moral could be to not play football with a thug before embarking on a sports performance.