# Dexcom G6 and outdoor exercise **URL:** \ **Category:** Sports & Exercise\ **Created:** [July 21, 2020, 4:17pm UTC](https://forum.fudiabetes.org/t/dexcom-g6-and-outdoor-exercise/10023 "2020-07-21T16:17:47Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![Eric](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/eric/32/9209_2.png) [@Eric](https://forum.fudiabetes.org/u/Eric)\ **Post date:** [July 21, 2020, 7:14pm UTC](https://forum.fudiabetes.org/t/dexcom-g6-and-outdoor-exercise/10023/4 "2020-07-21T19:14:38Z")
> [@HippieNerdBabe](#): > > Would being super hydrated prior to riding help? Yes, that would help. You can also figure out how much sweat you lose, to get an idea of how much you should be drinking while riding. Here is a little summary on how to calculate it: > [@Figure out your sweat loss for CGM](https://forum.fudiabetes.org/t/figure-out-your-sweat-loss-for-cgm/1345): > > I have noticed that Dexcom really bonks on me after about an 1 to 1 1/2 hours of running. This is because of the amount of sweat loss I have, which reduces the effectiveness of the interstitial fluid for measuring BG. I occasionally check my sweat rate to know how much I should be drinking to replace lost fluids. Here is how to do it: (this is a very close approximation, but for simplicity, it ignores the small difference between Avoirdupois weight in ounces and fluid ounces…): Do a bit of … --- _[View the full topic](https://forum.fudiabetes.org/t/dexcom-g6-and-outdoor-exercise/10023)._