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.
Do a shoulder bridge with abdominals. If you want this exercise to really work your shoulder muscles you should make sure to be pushing yourself as far off the ground as possible. 3. Do a bridge exercise (with an exercise ball). Just like a regular bridge exercise, this will build up strength in your arm, leg, and back muscles as well as your shoulders.