I stand a lot.all day. eventually my legs feel like they spasm or something possibly along the veins. and legs burn. when i lay down, it goes away.

? Venous reflux: The symptoms described can be related to venous stasis-varicose veins. Do you have varicose veins? Problems with one way valves prevent the venous blood from flowing backward down the extremities. Standing for long periods can cause the superficial veins to be under extreme pressure due to the lack of vavular function. Consider compression stockings or vein workup with ultrasound review.

See Vein Specialist: Your symptoms may or may not be due to an underlying vein problem. The most important component of veins issues is malfunctioning of the valves in the saphenous system and this is determined by a venous reflux ultrasound. This test will show whether or not you have a vein problem. You should see a vein specialist.