New York Times (blog)1 Minute of All-Out Exercise May Have Benefits of 45 Minutes of Moderate ExertionNew York Times (blog)Peter D. Kramer Jumps Back Into the. .... Opinion. Today's Opinion · Op-Ed Columnists · Editorials · Contributing Writers · Op-Ed Contributors · Opinionator · Letters · Sunday Review · Taking Note · Room for Debate · Public Editor · Video: Opinion ...and more »