As everyone else has mentioned, add salt to your water(make sure it’s a good mix, you can look online to see how much to add per gallon etc). I assume since you work for a drilling company, you are outdoors in the heat and constantly drinking water. By doing so, the water completely flushes your body of the necessary electrolytes so just make sure you’re replacing them. Also try some potassium supplements, as stated above… bananas don’t carry a high enough content to do much. Good luck man, I know they can be a real bitch to deal with.