Yep- very scary stuff! I have to supplement magnesium and pottasium during "heavy workloads" in my traning program- like NOW. But you can't take them at the same time so I feel like a little old lady w/ my pill box and watch going off to remind me to "take my pill". For me I cramp really bad. Never had the heart issue! Thank god! But MAN does that sound scary. Thanks for giving everyone the heads up!
Take care and take it easy!
Denise