https://community.usms.org/swimming/f/general/11061/blackoutI don&#39;t often post to the message boards, but am a frequent visitor and have gained much valuable information from the board. I am 58 years old and work out with a masters team 5 days a week and normally do 3000+ yards. During last Mondays workout, afteren-USTelligent Community 12https://community.usms.org/thread/181989?ContentTypeID=1Thu, 20 Dec 2012 09:05:17 GMT3187ac58-ba85-4314-b79a-c45cd885e09a:df94ba9e-3a69-4b82-8452-62468edd31c3BetsyThe &quot;not much water&quot; is probably the key. I have 2 friends, both triathletes, who had a stroke due to exercise and dehydration. Fortunately, both are fine with no further incidents. Both spent several days in the hospital for testing. I am glad to hear that you are okay.<div style="clear:both;"></div>