If your hips and calves allow you to keep good technique from ground, then go from ground. If not, use a platform of 8-12 inches in height. Its not really designed to have value as a deadlift per se, the idea is that your core has to engage to keep the body central while dealing with a unilateral load. If you find your torso 'leaning' or your shoulder coming forward/torso rotating at any point in the rep, then you are going too heavy.
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