Is it really necessary to waste 30 minutes of our precious pre-race time on a warm-up routine, or is it just a placebo effect perpetuated by coaches and experienced riders who want to make us feel like were doing something productive? I mean, think about it - our bodies are capable of adapting to physical demands in a matter of seconds, so why do we need to spend so much time getting our hearts rate up and our muscles warm? Cant we just start racing and let our bodies figure it out on the fly? And whats with the arbitrary 20-30 minute mark for warm-ups? Who decided thats the magic number, and whats the science behind it? Is it just a case of everyone else is doing it, so we should too? And while were at it, whats the point of all those silly dynamic stretches and leg swings? Are they really doing anything to improve our performance, or are they just a way to look cool and pro while were waiting for the starting gun to go off? And dont even get me started on the whole raise your heart rate to 150-160bpm thing - whats the logic behind that, and who decided thats the optimal zone for warm-up? Can someone please explain to me why were all wasting our time with these elaborate warm-up routines, and what the actual science says about their effectiveness?