Thanks for the advice. Yes it's in a pool so no wetsuit. I was also under the impression that water temp makes a big difference. For example I was regularly swimming 3 km odd at Gospel oak lido in the summer before work and what stopped me hitting 5k was fatigue. My arms were just exhausted and I felt I couldn't really continue. That's why I thought a sip of energy drink every km might help. Also the lido at the time was 24 which seemed perfect. I expect the pool to be closer to 30. How does that effect things?
Thanks for the advice. Yes it's in a pool so no wetsuit. I was also under the impression that water temp makes a big difference. For example I was regularly swimming 3 km odd at Gospel oak lido in the summer before work and what stopped me hitting 5k was fatigue. My arms were just exhausted and I felt I couldn't really continue. That's why I thought a sip of energy drink every km might help. Also the lido at the time was 24 which seemed perfect. I expect the pool to be closer to 30. How does that effect things?