Fist

 https://www.google.com/search?q=Fist

Keep your hands relaxed and don’t clench your fists, instead keep your fingers slightly curled inwards and rest your thumb on top of your first finger. 

Preventing gravity from sucking energy

(Clenching your fists will put pressure in your arms, shoulders and neck and can also increase blood pressure. )

https://www.google.com/search?q=Walk+Fist

https://www.google.com/search?q=bodhisattva+fist