I don't do much exercise; at least not anything that needs to be tracked by a Fitbit I do slow and heavy weights (power of ten, Fred Hahn type exercise at a Y) some intense water aerobics in winter and daily in summer, walking outside though damaged my knee hiking last August, gardening, rather everyday "stuff". Also don't egg or fat fast, just plain 'ole fast now. http://forum.lowcarber.org/showthread.php?t=472377
Sounds like you are doing great with the egg fast.