<human>: Can you condense the text into three sentences or less?

So, I've been losing a lot of weight recently (I'm down 40 kg since easter)  solely from making smaller portions, and watching what I eat. But now I'm stuck at 90kg, and I can't get the rest that I want off (I want to get to at least 70kg).  I know that I need to exercize, but I just don't know how to do it.  Before I graduated high school I played a lot of team sport, but now that I'm not with my school I get too anxious to join any other teams (which coincidently came from being fat). I also can't afford a gym membership, and it's getting too hot to go running outside (which I was doing before I started losing weight). So, what I'm wondering is what you guys think I should do, and ways to make me do it and get more motivated :)
<bot>: I lost a lot of weight by watching what I eat and now Idk how to exercise to get the rest of it off