Finally, the truth behind the reason men lift weights so obsessively: More muscles means more sex.

That's the philosophy of personal trainer and muscle guru Nate Green, who turned it into a book, "Built For Show" (Avery, $19.95), with four, 12-week programs to help the average guy get what he really wants.

"You work out so you can increase your chances of hooking up," Green writes. "That means having the kind of physique that looks good in clothes and looks even better naked."

— Mike Gordon

ON THE TUBE

RETURN OF 'LOST' JUST AROUND THE CORNER

The fourth season of "Lost" is out on DVD this week, helping to ease the anxiety of waiting for the show's new season, starting Jan. 21. The filmed-in-Hawai'i show will air on Wednesdays; on Jan. 21, expect a three-hour block, with an hour of clips and two new episodes.

More relief for your "Lost" jones? See a preview, featuring Kate (Evangeline Lilly) on the run (natch), at http://www.abc.go.com/primetime/lost, and behind the scenes action video with commentary from Jorge Garcia (Hurley) at http://www.Amazon.com.


— Wayne Harada