All these I think I owe to the energy I have cultivated through meditation and healthy eating and exercising in nature. I feel energetic right now even though I have worked the whole day. The secret: Spiritual Heart meditation, pure intention (the desire to go towards God, the desire to experience unconditional love all the time and to help others (it comes with feeling love naturally), healthy eating to purify the body to be able to store more prana and exercise in nature also strengthens the body using this prana and food.
Great. I am off now.