Do your shoulders gradually roll forward as the workday continues? Maybe your upper back feels stiff after sitting at a computer, driving through the valley, or spending several hours looking down at your phone. You may try to correct it by sitting up straighter—but within a few minutes, you are back in the same position. That does not necessarily mean you need to “try harder” to maintain good posture. You may need more strength and endurance in the muscles that support your

You may be able to hold a regular plank—but can your core keep you stable when your body is loaded from one side? That is where the side plank becomes especially valuable. Running, golfing, skiing, cycling, lifting, and field sports rarely challenge your body in a perfectly symmetrical position. One leg accepts your weight. Your torso rotates. Your arms and legs generate force in different directions. Your core must keep your spine and pelvis controlled through all of it. Sid