- sure, like a kettlebell swing. yeah, exactly. - okay. - so you're gonna drop your hips, and then i swing the rock forward as i lock out my hips in an extended position. - like this. - hips go back. hips go forward. and go all the way up overhead and then right back down. - i don't know about that. - there's a lot of momentum involved keeping that rock moving as consistently as possible throughout this range of motion. - davey, thanks so much. - of course. - i think this really proves that you can get healthy, strong, and fit, and you don't need equipment. all you need are some good shoes, the great outdoors, and a big, heavy rock. - big, heavy rock. less is more. - thanks. - of course. - coming up on "naturally, danny seo"... ed sink? - try this all-natural idea instead. - how to clean out the garbage disposal without using harsh chemicals. - ? only you ? - we'll be right back to the more you know, on nbc. when your laundry blooms, your day blooms. with my exhilarating scent collections. snuggle scent boosters, fab

erika: born in mass, kettlebells 4 kids is expanding nationally, already in about 2 dozen states. find out how to support the effort on wcvb.com. wcvb newscenter 5. nichole: what a great kid. crossfitter, idle think i could ever -- good for him. nichole: treating drug addiction like a disease. reid: how a local hospital is changing its strategy to save lives. nichole: smart devices for the home more convenient and affordable then ever, but also risky. ben has your back, spelling out the vulnerabilities and what to >> this is an editorial by wcvb channel president and general manager bill fine. mr. fine: the traditional benchmark for evaluating a new president is after their first 100 days in office. but with donald trump, we've already learned old rules don't apply. the clock is running right now on his new administration. his choices will draw extra scrutiny, with no past track record to weigh. will president-elect trump surround hlf traditional confidantes in the mold of his new chief of staff reince priebus, former rnc chief, or lean more towards political operatives like breit