Uhh! I tried to put in more detail without dragging the story. So here ya go!
Sad truth
When Terra awoke some short time later she saw Cyborg, Beastboy, Robin, Raven and Starfire in the room. Cyborg was at a computer of some sort, and Beastboy and Starfire were on the couch that was in the room. Raven was looking out the window. And Robin was lost in thought it seemed like. She sat up in her bed and looked around, the Titans didn't notice her awaken. 'What happened to me?' she thought. She could vaguely remember what happened when she was outside earlier. 'All I remember is feeling really weak, then Robin was there. What happened?'
"Uhh ...I feel like I was hit by a freight train." she said. Beastboy quickly got up and went to her side.
"Terra, your all right!"
"Yeah, but what happened?" she asked.
"You collapsed on the coarse. You should have had someone else out there with you Terra." Robin told her.
"Sorry, but I don't just think that is all that happened. I think me getting hurt has something to do with my powers." she retorted
"I know." this now came from Cyborg. He walked over to Terra.
"What you know what is wrong with me!" she questioned trying to sit up.
"Yeah. You see when we fought Slade earlier something happened to your adrenalin system. Something seems to crave for your adrenalin now. But when what ever this is feeds off of your adrenalin, it causes you to weaken, at a fast rate. So this is why you only feel weak when you use your powers when fighting." everyone was listening intensively as Cyborg was explaining this.
"So, if I only get weak, then I should be fine right. I mean I will just feel tired. And if it only happens when I use adrenaline, then I should be fine, right?" the now naive Terra asked. Cyborg shook his head.
"Not exactly, if you keep using your powers it will drain you. Sort of like a battery, it will drain you till there is nothing left. If you keep using your powers Terra, you'll eventually..." then he didn't finish.
Now Terra was worried. She sat up even more and looked him in the eye.
"What Cyborg! What will happen if I use my powers! Tell me!" she demanded.
"You'll...you'll die." he said softly.
Terra just sat there, she didn't know what to say. She couldn't even think straight. 'So now I am going to die? But what if I need to use my powers? I need to protect the city. What if I need to protect my friends? Now I am just something that is holding then down, I can't help anymore, I can't be a Titan, I am just nothing!' her thoughts were interrupted by Starfire.
"Surly we can find what is doing this to Terra, yes?"
"I don't know Star, I haven't found anything yet. And if I don't know what it is, I can't stop it." Cyborg answered her walking back to his computer.
"How long to we have until it fully drains her?" Raven asked
"If she doesn't use her powers, never. It only drains her when she uses her powers and uses adrenalin." Cyborg told her.
"What do we do until we figure out how to stop it?" Beastboy asked.
"She will have to stay here. We can't risk her using her powers in combat." Robin told his team.
Just then red flashed every where and the alarm went off. They all rushed to the Titans main room. On the big screen it showed a map of the city. And in the right hand corner it showed a profile of Slade along with a picture of him.
"It's Slade! Beastboy you stay here with Terra in case something happens and she needs protection." Robin shouted. Beastboy nodded. Then Robin, Raven, Starfire, and Cyborg left the room to go fight Slade.
Terra then went and sat down on the couch. She still was in shock of what Cyborg said. This day started out to be a perfect day. Then it turned into hell.
A/N: Yep, that's right, Terra can't use her powers because it will drain her till she dies, all thanks to the little things craving her adrenaline inside of her. So now I hope everything makes sense.