It's pervasive in most sports. Even weight lifting where rests are basically manditory. Still you get absolute chumps who injure themselves out because they work out too often.
Meanwhile I've been half-arsing my weight lifting routine for years, but have made and maintained far larger gains, through the benefits of junk food, attainable goals, and laziness.
Can confirm. I'm deep into my second year of (a proper) lifting (regime) and I'm doing it with far less frequency and weight than I would've imagined at the start, due to chronic minor injury from constant overreaching in the first year.