TRENTON -- Three marathons in Wisconsin were canceled this month because of the heat, which is why Dr. Benjamin Wedro has picked "Consequences of Heat" as the topic for this week's Trentonian live-chat. Do you prefer to train in hotter or cooler weather? Do you know anyone who has suffered heat stroke during training or competition? Do you know what heat stroke is or how to avoid it? Join Dr. Wedro and The Trentonian with questions during the live-chat that starts at 11 a.m. Who is Dr. Wedro, who writes for WebMD, eMedicine and AskAmyDaily.com? In his mddirect.org blog bio at www.trentonian.com it reads, "Dr.Wedro is a straight talker like nobody else in the media. If you cover medicine, fitness, sports or health, put MDdirect's insight, analysis and facts to work for you. Get the "official" report, then ask Dr. Wedro. He'll give it to you straight."