Huh? The article content doesn't match the article title. As I understood it, for a restful nap, you should ingest caffeine and then nap. The caffeine kicks in

Huh? The article content doesn't match the article title. As I understood it, for a restful nap, you should ingest caffeine and then nap. The caffeine kicks in after 20 minutes, and the short nap clears the sleepiness.