We all have those days when we just feel tired, with no energy at all to do anything, really. It is especially important on those "kind of days" to try some yoga for energy! Yoga is key to getting your blood flowing. You may think of yoga as being soothing and relaxing, but it can be incredibly energizing too. Focus on your breath as you flow from posture to posture.
Tadasana, or Mountain Pose, is great to do in the morning. Mentally, it leaves you invigorated and motivated. Physically, it helps to create space within the body, allowing internal organs to work more efficiently. This is great for respiration, as well as digestion and circulation. All good things to bring about more energy!