static hold plank
Static holds are especially effective at strengthening your core, as you have to hold your body still to lift weight. They also help build joint resiliency, which means you'll be less likely to sustain an injury during heavy lifts.
Static holds can build muscle Static holds improve balance and posture. These exercises require you to keep your posture correct with a straight torso, shoulders above hips, and raised chin. Your postural muscles will need to work extra hard to maintain your body's centre of gravity. Static holds can help increase your endurance and strength.
static dumbbell hold. Static dumbbell holds are a great way to increase the strength and conditioning of your arms. These exercises are also known as isometric dumbbell curls. In this exercise, you will curl up a heavy weight with your arms bent at a 90-degree angle and your biceps fully flexed. You will hold the weight in this position for anywhere between 10 to 15 seconds.