When doing new movements, DOMS is usually a results. DOMS stands for Delayed Onset Muscle Soreness, and usually kicks in 24-48 hours post workout. One way to reduce DOMS could be to increase range of motion (ROM). Sumo deadlifts place a greater emphasis on the adductors (inner thigh muscles). The adductor are often tight and underworked, due to the long sitting durations through our day.
Sumo Deadlifts 5 x 8 E2M
On a 30:00 timer,
0:00-10:00 Build to a 1 RM Strict Press
10:00-20:00 build to a 1 RM Front Squat to Medball
20:00-30:00 build to a Max Effort Pull-up