Increase your treadmill's incline or resistance level. Watch salad dressings, which are notorious for containing high fat and carb levels. Consider adding resistance training or weight lifting to your workout. Even if you just lift dumb bells or put on ankle weights while you walk. You'll notice a difference.
The paired tail fin is attached to the upper surface of the mantle and is made up of muscle. The colossal squid swims forward through the water by undulating the fin longitudinally. The fin is unusually massive and muscular (1,183 millimetres long and 982 millimetres wide). This probably enables the colossal squid to move forward quite rapidly in short bursts when attacking prey.
The squid mainly feeds on soft bodies animals such as fish as well as other squids and needs a sharp cutting beak. While the octopus can and does eat fish (even small sharks), it feeds mainly on crabs (as well as other shelled inverts) and needs that short crushing beak. Squid beak (left) is for tearing.