this is not my study. but there's a headline that got our attention that says sex can kill you. researchers elsewhere in massachusetts to be specific say that sudden bursts of moderate to intense physical activity like sex or jogging can increase your chance of having a heart attack. that's why i don't jog. this goes for people who don't exercise or have sex regularly. so perhaps the bottom line here is either have sex more often or in the same of safety, do that or get in shape. >> yeah. because they're saying -- i don't know, it doesn't seem new. shovel snow after a big -- and they haven't done a lot of exercise. >> i think what's new is they put sex into the mix. >> how many times are you going to say this before 6:00? the kids are eating their fruity pebbles. >> i'm not going to talk about this anymore. >> we'll have you talk about it next hour. two dramatic developments in japan's nauk lar crisis to get you back on the top news. black smoke rising from the plant and radioactive contamination in the tap water.