Possible Clues:

• Ape beheaded in order to get Man
• She stands on her own two feet
• Say, man's attempt to get out of exercise
• Kangaroo, e.g.
• Attempt to restrict jerks from being like people
• Girl, say, tender after taking exercise
• Man? One finally asleep in suitable location
• One quietly lying in the bottom of the sea? You!
• Velociraptor, for one
• Two-footer?