Originally published on http://mashable.com/2014/12/25/fitness-tracking-multiple-sclerosis/?utmcampaign=Mash-Prod-RSS-Feedburner-All-Partial&utmcid=Mash-Prod-RSS-Feedburner-All-Partial&utmmedium=feed&utmsource=feedly&utm_reader=feedly Amateur athletes use fitness bands like the Fitbit to track their adrenaline-fueled adventures and then brag to friends. Others use the band to count their footsteps and the calories they burn.