From my experience, vaping can indeed contribute to feeling dehydrated, especially when you are working outside in the heat. The main reason is that vaping often causes dry mouth and throat, which can be a sign that your body needs more fluids. When you vape, the propylene glycol in e-liquids tends to attract moisture, leading to increased dryness. Additionally, working outdoors usually means higher temperatures and possibly sweating, both of which increase your need for hydration. If you combine vaping with physical activity under the sun, you might notice you feel more thirsty than usual or your saliva becomes thicker. To combat this, I always make sure to drink plenty of water throughout the day and take breaks in shaded or cool areas. Some vapers find that switching to e-liquids with higher vegetable glycerin content can reduce the dryness sensation. Also, cutting down on caffeine and alcohol, which can further dehydrate, helps maintain better hydration. Overall, vaping doesn't directly cause dehydration, but it can exacerbate symptoms of dryness and thirst, especially when combined with outdoor activities. Being mindful of your fluid intake and listening to your body's signals can help you stay hydrated and comfortable during outdoor work sessions.