I hear this term mentioned all the time, can someone explain when/how UFC fighters "peak"? What is the timeline and why does it occur at specific times? The reason I ask is that people make a big deal about MMA fighters fighting more than 4 times a year, yet muay thai fighters fight every two weeks. What is the difference and why do S&C coaches make such a big deal about it? Is there some kind of measurable physiological metrics that show athletes "peaking"? How is this measured? Edit: I'm referring to a peak for an upcoming fight not a career peak.