Echo, I bought some bands as Ross {TJMaxx}, I think they were Valero? I stared with blue then went to black, then later discovered I should have been using the much lighter red. I exercise in my living room, the previous owners removed a door leading to the hallway and I stuck a screwdriver into the metal loops of the hinge and taped the band to the handle. I was terrified that the band/screwdriver was going to come flying my way so I was always pulling lightly. I bought a Iron Gym for my next program, I still can't do a pullup but I learned that you can modify by standing on a chair and letting your legs take most of the weight off you arms. I found this method okay. I've heard of another product that is basically a rubber ball with a loop attached to it; you close a door with the ball on the other side and the loop hanging over the top of the door, then you loop your band/tubing handle through the loop and you don't have to worry about it coming loose. I looked for a link but can't find one.
ETA: Found a picture of one!
http://www.amazon.com/Fit-Exercise-R...292907&sr=1-27
This one is easier to see
http://www.amazon.com/Thera-Band-The...ef=pd_sim_sg_3
Belezura, Is your username pronounced Bel-e-zura? That's a lot of hard work! And so consistant! What do you do for HIIT?