Stand inside a Smith machine with a wide stance and toes pointed slightly outward. Grip the bar with hands inside your legs, then lower your hips while keeping your chest up and back straight. Drive through your heels to lift the bar by extending your hips and knees, then lower it back down with control while maintaining a stable core and neutral spine.
Log your smith sumo deadlift sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.