During our brief layover in Hong Kong, we went to have water (nothing more) and shower at the United First Class Lounge. Shower felt wonderful. Then off to Singapore!
Upon arrival in Singapore, we strolled calmly to immigration but were still the first through. Our bags arrived a short-time later, and we walked the brief distance through the terminal to the Changi Crowne Plaza, where we got our room for the night. Not as exhausted as one might expect, we went to sleep.