Good / Energy
invigorating - Making one feel strong, healthy, and full of energy
powerhouse - A person, organization, or thing that is very strong, effective, or influential in a particular field or activity.
venture - A daring journey or undertaking.
marathon - Any long and challenging activity, especially one that tests endurance.
unstoppable - So powerful, determined, or effective that it cannot be halted, defeated, or resisted.
reinvigorated - To feel a new energy and strength
stride - To walk with long, decisive steps in a specified direction.
workout - A session of vigorous physical exercise or training
motivated - Very enthusiastic or determined to accomplish something.
intensity - Great energy, strength, and concentration involving an activity, thought, or feeling.
overdo - To do something in a way that is too extreme
dynamic - Marked by continuous and productive activity or change