What to do when getting cramps on your feet?

This is my first post here- just been lurking for a while but this is a topic I'm familiar with. I just started swimming again after 16 years out of the pool. I swam competetively from age 7 through college so I used to have some skills. I never ran into cramp issues then, but I have them now. This is likely due to the fact that I have the same stroke but do no longer have the muscles to support it (yet!). I frequently get hamstring, calf, and foot cramps, typicallly near the end of practice- doesn't matter if it is a kick set or not. What is starting to help is a few suggestions from the coach. Since I do 445am practices exclusively he suggested drinking a moderate, fixed quantity of water before bed, and also suggested multivitamins making sure that they contain potassium and magnesium (magnesium has not been mentioned in this thread). I have noticed improvement since I started doing this, but I cannot tell if the improvement is due to drastic improvements in my fitness, or if it is due to the water and vitamins. I would think if you are at a fitness plateau they I'd maybe try the fluids and vitamins, or just fluids with electrolytes. I'm doing the multivitamins because my wife keeps telling me I'm deficient :) Glad to be here. Pete V

This is my first post here- just been lurking for a while but this is a topic I'm familiar with. I just started swimming again after 16 years out of the pool. I swam competetively from age 7 through college so I used to have some skills. I never ran into cramp issues then, but I have them now. This is likely due to the fact that I have the same stroke but do no longer have the muscles to support it (yet!). I frequently get hamstring, calf, and foot cramps, typicallly near the end of practice- doesn't matter if it is a kick set or not. What is starting to help is a few suggestions from the coach. Since I do 445am practices exclusively he suggested drinking a moderate, fixed quantity of water before bed, and also suggested multivitamins making sure that they contain potassium and magnesium (magnesium has not been mentioned in this thread). I have noticed improvement since I started doing this, but I cannot tell if the improvement is due to drastic improvements in my fitness, or if it is due to the water and vitamins. I would think if you are at a fitness plateau they I'd maybe try the fluids and vitamins, or just fluids with electrolytes. I'm doing the multivitamins because my wife keeps telling me I'm deficient :) Glad to be here. Pete V