Muscle relaxant (fwd)

I am 52 years old. My chest muscles and connected shoulder muscles are very tight or very stiff. If I want to stretch my hands backwards, it takes little bit of time and it will go only by inch by inch. Currently, I don't have any pain. But it is very uneasy. I don't think it is spasm. I do regular exercise at least 45 to 60 minutes. I was a gymnast till the age 23. After that I did not do exercise regularly, but recently I do exercise. As per physical test, I am in good shape. No BP, no sugar, no, no,.... I think this is the only problem I am going through.
Could you please suggest me one herbal medicine which I can buy from Richters.

If you haven't already done so, I suggest that you visit a doctor to get a diagnosis on your problem. In muscle stiffness with no other symptoms or injury, I suggest relaxing the muscles and improving blood circulation to the area. Keep the area warm to help loosen up the muscles. Exercise should be gentle, so that the area can heal without further strain.
German Chamomile flower tea relaxes the muscles and calms the mind. Linden flower tea is relaxing and supports the blood circulation.
A good massage therapist can help relax the muscle tissue.
A bath with one to two cups of Epsom salts helps to eliminate toxins through the skin. Massage the affected areas under water. Wrap up warmly after the bath.
Epsom salts is available at drugstores. German Chamomile flowers (Matricaria recutita) are available at Richters.