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.
Hip Bridge. How to do it: Lie on your back, feet flat and hip-width apart, arms relaxed, and knees bent. Squeeze your buttocks as you lift your hips, creating a straight line from the knees to the shoulders. Hold for a slow count of two, then lower slowly. Build up to 10 to 12 repetitions.