Santa Monica-based LIVESTRONG.COM, the online health and fitness site run by Demand Media, has updated the firm's MyPlate lifestyle management tool, the company announced this morning. LIVESTRONG said that it has added new custom receipe builders, an expanded food and activity database, and other features to the tool, which allows users to track what they are eating and how often they are exercising. The firm said the new tool also now integrates with LIVESTRONG Loops, the site's tool for finding local walking and running routes.