Soo Locks Menu. A birdseye view of the Soo Locks facility from the lower approach. The St. Marys River is the only water connection between Lake Superior and the other Great Lakes. Near the upper end of the river the water drops 21 feet over hard sandstone in a short Â¾ mile long stretch.
The bridge exercise is a great way to isolate and strengthen the gluteus (butt) muscles and hamstrings (back of the thigh). If you do this exercise correctly, you also will find that it is a good core stability and strength exercise that targets the abdominal muscles as well as the muscles of lower back and hip.
A list of International Exercises as part of the Interagency Exercise Matrix. Below is a list of international activities as part of the Interagency Exercise matrix. To see more information about a specific activity, click your desired activity and the heading will expand. To collapse, click the heading again and this information will condense. Expand All | Collapse All.