Very hot. Drank pretty well during the initial summit of Rocky Row. Definitely underfueled and did not walk the excess of 16% gradients. Walked only three times (>30% grade). Legs were annihilated for it. Ate a tripple portion of fuel and took the descent especially slow, hoping to get the body to recover. The heat took over after crossing 812 along the brook toward the James River. Took a bath. Sufficiently refreshed and encouraged by three consecutive groups of friendly hikers and decided to make a partial summit to the 4000' climb mark (sixth switchback?). Great day. Tired but not destroyed. Not yet ready for double summits of this steepness in this heat but my progression in less than a month is remarkable!!!