I just found this topic in a search as I wanted to add my 2p.
I’m a competitive rower, I also do CrossFit as a cross-training, base fitness and strength element to my weekly training regime and have switched onto Huel for breakfast and lunch every weekday. It suits me because I can have my breakfast in the car whilst I sit in Cambridge traffic after a morning CrossFit session and it is both high enough in protein and high enough in carbs (I often add a banana when I blend my breakfast shake the night before) to be a decent post-workout. I have a busy job and often have to bolt down food between meetings so +2 for Huel because it ensures my quick lunch is both balanced and satiating.
It took me a while to ramp up slowly and get over the digestive issues but now that I have, I end up getting calf cramp all the time. Last weeks training was massively disrupted by calf cramp that went away with a days rest and then BOOM came back with a vengeance during my next training session.
Initially I supplemented magnesium, I thought potassium was unlikely as I do add that banana to my morning shake and I had MgSO (epsom salt) baths when I was having trouble but no effect. But Huel has plenty of both of those and I have now realised that it’s actually the very low sodium that is causing problems. In 800 calories worth of Huel I’m only getting about 500mg worth of sodium, arguments aside over what is an optimal amount when at rest that’s well below the 2300mg target in Myfitnesspal, even if I doubled my Huel intake I’d still only be getting 1000mg of sodium. I sweat out more than that in an hours CrossFit + erg session (OK I have no idea how much sodium I actually sweat out obviously but I do sweat a lot when I train.) Now that my sodium levels are back up no more calf cramp and my energy levels are also better.
I’m yet to switch back onto Huel as I’ve had some days at home with a seasonal virus, I’m deciding whether to bung a small scoop of rock salt in my Huel or whether to go for an electrolyte supplement during my training sessions. It’s certainly something that is very easy to add which I have no problem with, but it’s worth warning people about, I think.