More often than not people complain of their muscles and their body feeling too tight, stiff and sore- including me! Unless you spend a great deal of time stretching (and who really has all this spare time?) then this is unlikely to resolve. Most workouts involve you using your muscles, contracting them, and therefore the muscles will tighten and remain slightly tightened if we do not lengthen them afterwards.
Stretching workouts also make us feel good, they stimulate your parasympathetic system- this is the functions opposite to your adrenaline release, so they create calmness, peacefulness, and relaxation. The element of core exercise here allows you to sweat a little and feel energised from strength building. So try this quick workout to enjoy strength and feel relaxed with stretching- the best of both worlds!