My BMI is 18.5. Age 24, height 172.5 cm and weight 55 kg. I am undergoing training for triathlon. I swim 3 to 4 days a week (6-8 km in 4.5hrs - 6 hrs). I cycle around 50 km a week in 2.5 hrs. I run ...
After (or during) an hour or three of hard, sweaty running and/or biking, how much salt do I need beyond my normal diet?