The Attacks of the Goths on the Roman Empire. It is ironic that the most serious threats to the Roman Empire began not with the western Germanic tribes of the Roman frontier but the eastern Germanic tribes, particularly the Goths.
In a large, shallow body of water, hundreds of flamingos congregate like an avian water ballet team: all preening their pink feathers, resting in the sun and standing on one leg for hours at a time. Flamingos even sleep that way. Bird Image Gallery.
Treading water is tiring at first, which is why it will help to increase the endurance of the leg muscles it uses. There are a few ways to increase leg stamina: Do leg sets: Tread with your hands, then elbows, then entire arms out of the water for specific intervals (probably around 10-20 seconds initially).