Dylech fod yn ymwybodol bod yr ymarferion hyn yn rhan o raglen raddedig. Dylech roi’r gorau i’r rhaglen hon os nad ydych yn teimlo eich bod yn datblygu adsefydlu neu os ydych yn profi rhai o’r symptomau canlynol, oherwydd efallai y byddwch yn dioddef o Syndrom Blinder ar ôl feirws (PVFS):
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