It also breaks down nutrients for energy and helps to treat or detoxify insecticides that may be sprayed on the roach. Cool Cockroach Facts Roaches have faster reflexes than humans and some can run up to three miles an hour. Most American cockroaches spend 75 percent of their time resting. Finding a places to rest is easy when you're that small. Young roaches only need a crevice that's as wide as the thin side of a dime.
Adult males can squeeze into a space the size of a quarter.