| Within days my energy levels pick up, and my tendency to ill temper and irritability fades away. |
| Caffeine prevents mental and physical fatigue by blocking receptors that notify the brain of low energy levels. |
| After a fix of chocolate, my energy levels would soon crash and burn and by supper-time I'd be wiped out again and desperate for a glass of wine. |
| King recommends meditative driving as producing an increase in energy levels, greater creativity and higher sexual potency. |
| In order to obtain good printability, it is necessary for the ink and the substrate to have compatible surface tension and surface energy levels. |
| It was like looking at the evenly spaced energy levels of electrons in an atom. |
