If you are feeling anxious, sad, or drained, try hugging a tree and allow her vast amount of grounding energy to assist you. 15 minutes will do.
This is a very nice and clear description of the practical use of our connection with trees. It is a simple example of our interconnectedness with nature. It is widely spread by DailyOM and therefor I copy the entire text.
“Trees are among the world’s greatest givers. Their slow and gentle life cycles provide the world with clean air, their roots filter water, and their majestically spreading branches provide shade. Full of vibrant, natural energy, trees can also give us the gifts of peace and nurturance. Hugging or sitting with your spine against the trunk of any tree can ground your body and inspire a profound closeness with nature as the energy of the tree connects to you. Making physical contact with a tree can help you relax, alleviate stress, sleep more deeply, and hold on to more positive energy. Trees can absorb great amounts of energy and have the ability to soak up harmful energy from deep within you. If you are feeling anxious, sad, drained, or tense, then try hugging a tree.
Go to the woods, a garden, or a park, and find a tree that you would like to hug. Stand next to the tree and close your eyes. Relax your senses while breathing in the scent of leaves and bark. Listen to the creaking of the branches. When you feel settled, open your eyes, keeping them unfocused, and walk around its trunk. Feel the unique energy of the tree as your auras meet each other. Ask the tree for permission to touch it. If you feel the tree saying yes to you, begin breathing in its energy. Put your arms around the trunk and press your face to its bark. Embrace the tree for as long as you wish, feeling the roughness of its wood and the strength of its years. Relax into that strength and let the tree support you. You may even be able to physically feel a cyclical flow of energy taking place between your body and the tree.
You can sit with your back pressed to the tree for the same effect if you feel more comfortable doing so. Likewise, if you are seeking greater comfort, you may want to wrap your legs and arms around the tree, either at the base or by straddling a branch. Remember to thank the tree because by hugging your tree you are drinking from the well of natural copious energy cultivated by the tree’s many years on this earth.”
And why not adding my personal advice. If you need energy to feed your body physically, if you are very tired, choose a European Oak (Quercus robur), or an ancient European red pine or Scotch pine or Baltic pine (Pinus sylvestris), or an Ahorn (Acer pseudoplatanus) or a walnut (Juglans regia).
If you wish some more clarity in your mind, in case you feel confused, choose a Linden tree (Tilia platyphyllos of T. cordata of Tilia x europa), a Yew (Taxus baccata), or a beech (Fagus sylvatica).