Tiredness and Meditation I decided to meditate continuously, no matter what occurs within meditation. I will attempt to do as best I can.

However, the only circumstance when I feel like meditation would be difficult would be when experiencing lethargy or fatigue.

I noticed that some things usually occur while particularly tired:


Meditation becomes difficult as the mind tends to drift or wander.
Rather than generate insight or focus the mind will create aimless and incoherent thoughts. 
The body will slacken and it becomes easier to drift off.


Hence, does anyone have tips to generate more energy for meditation, be it in terms of lifestyle or immediate antidotes? And should I try to meditate despite these feelings of tiredness and fatigue or should I merely abstain or distract myself until I am more alert?
Thank you.
Story about Ven Moggallana might be interesting to you.  He was struggling with sleepiness (or tiredness) on his path to liberation.  Buddha gave him specific set of instructions.  Per Buddha, Last step to fight sleepiness is to actually sleep.  Maha-Moggallana