1. (

• stimulate ,
• arouse ,
• brace ,
• energize ,
• energise ,
• perk_up ,

) cause to be alert and energetic; "Coffee and tea stimulate me"; "This herbal infusion doesn't stimulate" ;

2. (

• excite ,
• energize ,
• energise

) raise to a higher energy level; "excite the atoms" ;