Weightlifting with MS

Hi, So I've been suffering with RRMS for the last 10 years currently on Gilenya and from the start I've always had difficultly with exercise. Anything that drives up my body temperature is just murderous. After a session with the hospital physio I may as well be confined to bed for the day. It's made goals like fitness and such really difficult. I work full time and my physio would be recommending spin and all these other classes that I legitimately felt were doing more harm than good as sometimes I would be just incapacitated for days after. I'm getting married however in August though and I made a promise to myself that I would wear heels (weak calves) so I decided to give it another go and I joined a gym. After explaining my situation one of the trainers there recommended that I pick up strength conditioning and weights. I was pretty skeptical. My phsyio was big into cycling and overly fascinated with running on treadmills and all these things that just we're never going to work for me, all because they said I'd lose weight faster with those. I always felt like that was maybe their primary goal instead of mine which was improving mobility. Like, I'm just happy to be able to walk and get around and be a bit fitter and stronger. But the gym trainer was right and weightlifting and conditioning has been fantastic so far. I just don't get any of the same debilitating side effects as the rest. My physical strength and coordination has jumped spectacularly. Same with balance And it was slow going at first. I mean, I was squatting onto a box at the start with assistance. But this week I hit a bar squat of 50kg on my own. I never thought I'd ever be able to do that. Has anyone any experience of this? The weightlifting makes me sweat but doesn't seem to kill me with fatigue afterward like the rest and the neurologist has noted significant improvement all round.
@Stumbler

@emma_madamn_degrimes , yes, you're right, increasing your core body temperature can cause us problems :- https://www.mstrust.org.uk/a-z/uhthoffs-phenomenon Plus, you should start moderately, only increasing as you prove that you are tolerating the exercise. Swimming is a great exercise, as the water maintains your body temperature and it's low impact due to your buoyancy. Aqua-aerobics is good for the same reasons.

@Emma_Madamn_DeGrimes

@stumbler My physio would run me till I needed help off the treadmill. Weights is the first time in years exercise has left me with more energy. I do love swimming but with the immunesuppressor I'd always be concerned about illness going into a pool with other people.