Charak Samhita
उपवासोऽसुखा शय्या सत्त्वौदार्यं तमोजयः। निद्राप्रसङ्गमहितं वारयन्ति समुत्थितम् ॥५६॥
fasting, and environmental settings such as uncomfortable bed go a long way in overcoming excessive sleepiness/hypersomnolence. The above-mentioned factors, along with overwork, old age, vatika diseases, vatika constitution
english translation
upavAso'sukhA zayyA sattvaudAryaM tamojayaH। nidrAprasaGgamahitaM vArayanti samutthitam ॥56॥
hk transliteration by Sanscript