Be more flexible on Monday
Lunge hip flexor stretch
3 reps each side
With one knee on the floor behind you and the opposite foot on the floor in front of you, tilt your pelvis forward and reach up with your arm on the same side as your knee on the floor. Hold for 10 seconds, then repeat the same move, switching legs and arms.
This will help stretch those muscles around the hips that become stiff and tight from sitting at your desk.