Hello Nippy
Many people (including myself - well past the menopause :wink: ) have complained of increased night and day sweats when on steroids, particularly the higher doses, so it is possible they could be having the same effect on you when walking.
However, it is possible that the weight gain could also cause sweating on exertion.
Although the higher dose steroids increase our appetite enormously at first, this should ease on the lower doses. Meanwhile, to avoid too much weight gain it is necessary to reduce carbohdrates such as bread and white potatoes (substitute with sweet potatoes), parsnips, etc. These foods turn to sugar in our bodies and further aggravate any steroid-induced weight gain and could also add to the risk of steroid-induced diabetes.
Also avoid processed meats and sugar (the latter, together with too much coffee, can further stress the adrenal glands which have already been suppressed by the steroids.
I have tried to eat as many anti-inflammatory foods as I could such as oily fish (sardines (with bones - good for our bones), mackerel, salmon, trout, beetroot, avocado, garlic, turmeric.
Good diuretic foods to include are asparagus, garlic, fennel and melon.
I gained half a stone very quickly on a starting dose of 40mgs Prednisolone in 2007 (diagnosed with PMR and GCA) and although I already ate a diet full of fresh veg and fruit decided to research the best foods and those to avoid and as a consequence, avoided further weight gain. Since getting down to the lower doses (on half a mg daily now), with a bit of extra effort I have lost all the increased weight and more. The best news was the extra steroid fat disappearing from my cheeks and between my shoulder blades - I could now stand up straight again!
Do hope some of this may help, Nippy, but, rest assured that you will lose that extra weight as you reduce the Pred further especially with a little help from the right foods along the way.
MrsO