Run, run, as fast as you can

We have any runners here? I've been getting back into running, mostly just to drop a few pounds. Able to go 3 miles in half an hour, after like months. :'(

I used to love running in elementary and middle school, but I'm really out of shape now. Not that long ago I played tag with my cousin, and she wore me out pretty quickly. I have a treadmill and a cycle, but I've felt too lazy to get into it lately. XD

I would like to get more back in shape, but I come home from work not wanting to do much of anything. :P

I could run but I have shit stamina and my knees and ankles are so bad

i used to be a really fast runner as a kid, but after developing a ton of physical issues i can no longer exercise without being in pain and my body giving out within a couple minutes

I'm not as fast as others my age and I get tired fast.

I wanted to do track when I was in middle school lols but I cannot run at all, so no

We did a test at school and last time I ran 100m in 12 seconds.
I can say I'm pretty fast but I have little stamina, I used to have a fair amount of that back when I used to play football but I kinda lost it. :/