When I contract a muscle hard and then try to move it in the opposite direction, for example hyperextend arm to flex tricep and then try to curl, I feel a lot of resistance. If I clench my fist quickly and open it the same thing happens and I can’t fully open it.
It dosen’t seem to happen after the muscle is “warmed up” but on the first rep of certain exercises this is annoying as hell. Just in general though I don’t know what this is. Any ideas?