If you’re a cyclist, you know.
The hills and headwinds separate the men from the boys. If you want to get better, faster, stronger, climb the hill and ride into the wind.
But then that killer, stand-on-the-pedals, crank-to-crank climb crests, and now you’re screaming at break-neck speed down the other side. Eyes streaming tears. Fighting to keep it together.
Or you take a turn, and that wind, which you’d swear had turned the smooth, hard road into hot, mushy sand, is like a hand on your back. Pushing you forward. Your legs now require half the energy to propel you forward twice as fast.
The hills crest, and the wind changes direction. Best to train for both.
Just like life.