I am a 58 year old male, 185 pounds, good health, active lifestyle. I over-did it last Saturday with outside chores and believe I became dehydrated. Saturday evening I had very achy shoulders and chest, fatigue. I go through this about once every spring until I start thing better, so it s not new to me. What s different this time is Saturday night I had to get up 4-5 times to urinate as opposed to maybe once. The urine was clear and copious. Fatigue continued on through Monday, and I had to rest most of the day Monday.I ve been sleeping well, I ve been drinking water and sport drink, but Tuesday and Wednesday, my urine is very dark and not plentiful.Is this likely just not drinking enough still? What is this? The achy shoulders and chest are fine now, moderate fatigue Tuesday and Wednesday - nothing I can t deal with.