At the moment I cycle predominantly, but I have been religiously soaking in Magnesium every week for years, for recoveries from various physical activities and for other health benefits too.
I have been using Intralabs for a while, over years. I have taken a break to get my Magnesium Chloride from Amazon at some point, where they were also available for a while. Until I had to change suppliers as Intralabs weren't on Amazon after any more. For convenience and cash limit, I have stayed with another supplier via amazon until now when I'm on a mission to buy things in high volume and low cost and kind of have room to store also. I couldn't find a better price for 25Kgs of Magnesium Chloride on Amazon, including delivery it was the same price from Intralabs as excluding delivery on Amazon, where the 25kg unit was not available on Prime Delivery. Even have somewhere to store, and reduced my monthly spend on this item by 2/3rd and no longer at risk of running out before the next monthly delivery. Super Pleased.