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.
Go into a bridge. You can do this from standing or from the ground. 1  Lay on the ground with your knees bent at a 90 degree angle. Your feet should be planted firmly on the mat.  Place your hands by your feet at your ears with your fingers pointing at your feet. Your elbows should point up towards the ceiling.