There are 4 different states of Progress Bar for the Lab and Benefits -
  1. Inactive State with no Benefits provided
  2. Normal State with low Benefits Percentage
  3. Active State with medium Benefits Percentage
  4. Hyper State with highest Benefits Percentage
Fill the bar fully to reach Hyper state and enjoy higher Benefits. The fill reduces as the active time reduces. So keep using Cells at regular intervals to maintain the Lab state.