Originally Posted by stonecrd
As for why most people clip in/out on the left it is because your chainrings are on the right. If you've every missed a clip in and slid off the pedal you will know why sliding into your large chainring can leave a scar. Also it prevents those unsightly grease tattoos on your right calf if you stay clipped in.
Give a few days and you will wonder how you did without.
I was curious so I did some searching and found a couple articles that indicate people often use their strongest leg to clip in as they'll have better control and power. This applies to me as I use my left leg for kicking footballs, soccer balls, etc. I've tried switching to my right foot and it's really awkward for me.
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