article_snippet.sent: All except some of the famously fit first lady's more intensive workout regimes.
article_snippet.sent: Jarvis, who's moving on to become the Ford Foundation president Darren Walker's chief of staff, admits Jarvis did not share Michelle's love of D.C. workout craze Solidcore. '
article_snippet.sent: Solidcore's website says Solidcore's website utilizes 'slow and controlled full-body movements with constant tension to work your muscle fibers to failure...to rebuild a more sculpted, stronger and [solid] you.'
article_snippet.sent: Jarvis can have that': Jarvis says Jarvis mostly kept up with fitness-loving Michelle, but drew the line at D.C. workout craze Solidcore .