For bioelectricity I do heat and flame meditation,and invoke fire, expand the sushumna and other meditations in the JOS website that are about increase your energy then I practice martial arts´s exercises until I feel that my energy decreased and then refill my body with energy and repeat the meditations in order to recover from the exercises.
If you practice sports, athletics or martial arts together with yoga(martial arts exercises are very similar to yoga) then your bioelectricity increases gradually. Personally, I imagine my body engulfed with a brilliant golden energy and my spine receiving electrical neon red energy from the sun while I practice and the energy is brighter everytime.