I am going to the gym quite a bit and also do Jazzercise once a week. I just cannot face wearing any old T shirt or "daggy" pants to go. Since there is very little available in colors other than black/dark blue or gray, especially in the pants sector, I decided to buy stretchy material and make some tops and pants. The patterns are either copied from some tops I already had and patched those together with some leftovers. The pants are an altered Burda pattern, from an older magazine. Do not recall which one it is. I do not have an overlocker but my trusty Bernina has some stitches suitable for stretch material. Together with the twinneedles I bought it works just fine.
I already have another couple of pieces of material ready to go. However, I definitely need other things more urgently than gym wear. I bought the electric blue and turquoise from Spotlight when they had a sale on and the patterned bit from Pitt Trading. Another store I really like and which has lots of nice and more unusual material. I may even have an order to make an outfit for one of the girls at Fitness First.