This is one of the most common myths about meditation. People think that meditation consists of sitting still, possibly in the buddha posture, unmoving.
Not even in the sightest is this true.
Many meditation exercises involve sitting still. But meditation is not an activity and it is not an experience. Meditation is the existential realisation that the consciousness which is aware of anger, pain, fear, love, joy, gratitude is separate from any and all of these experiences.
So suppose you are angry. If you storm and rant and rage and plan revenge, then you are not in meditation. If you sit and keep very still, but continue to rage internally, you are not in meditation. If you suppress the anger with premature forgiveness, you are not in meditation. (Some schools of meditation unwittingly encourage this). If you sit and succeed in detatching yourself from the anger, then of course you are in meditation.
But suppose that you first put a big cushion on the floor. And (don’t hurt yourself) you attack the cushion with all your might, beating it, screaming, shouting, hitting. Then if you remain present and aware as you do that, you are in meditation as you do it. Any action carried out with awareness carries the quality of meditation.
If you then sit silently and just allow your experiences to be as they are, quite likely you will feel a deeper calmness and peach than if you had not done the anger release. This is meditation not because it is calm and peaceful, but because you are present and aware.
These are two different qualities of meditation. Being aware during anger release or other action is a meditation of the outgoing or male or yang energy. Being aware in silence is meditation of the receptive or female or yin energy. But they are both equally meditation.