Sit close to the window or source of ventilation.
Poor ventilated classroom can make it easy for you to fall asleep. Sit close to the window or near the fan, this makes it easy to get good ventilation and reduces your chances of falling asleep during lectures.
Get enough sleep the night before.
The body needs up to 7hours of sleep every night, this is important to help your body work at full capacity. Getting enough sleep the night before going to lectures gets you well rested and puts your brain at optimal capacity while also reducing your chances of falling asleep during lectures.
