So I've been using a penimaster pro for just over a month and I've realised that when I stretch in the upwards position my dorsal vein becomes very tight and appears to be the main source of resistive force. Following a session of upwards extending I find my flacid is much fuller and longer and this persists over the following days. Is this normal and is it safe for me to extend upwards given this being the case?
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Tight Dorsal Vein When Extending Upwards
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