I am 28 year old male. I am having twitching, spasms on and off for last 2 years after extensive cycling sessions for weeks. When it started, I also had pins and needles in my arms. I cant stretch my arms or legs out of fear of spasms. I also feel very minor tremors and slight stiffness in my fingers/hands. And I feel internal tremors when I lay down. Sometimes those tremors get unbearable just when I am about to sleep and occasionally, I also feel my arms are being squeezed from inside at the same time which doesnt let me go into deep sleep. This is resulting in poor sleep and fatigue. I also get finger jerks some times now. Mistyping and dropping things is becoming bit more common although its not much of a problem. Any idea whats wrong? I went to a GP when it started. He played aroune with my fingers and toes, made me catwalk, ran through blood and thyroid tests. But nothing was found. Was prescribed vitamins b12/d but they didnt helped. Any idea what it could be? I am not feeling any numbness. Just slight stiffness twitching and cramps of stretching. Also my head is becoming sensitive to headaches.