Things during lunch hour
Catch up with old friends.
If you have a friend who works nearby, try to meet him or her during lunch occasionally.
Remember, your personal life needs tending to just as much as your work-life, so be sure to take the spare time you have and use it to fulfill your personal needs.
Your midday break is a good opportunity to catch up and socialize, in person or by phone—but don’t lose track of time, and don’t treat it like happy hour.
Catch up with 追上； 赶上； 和…算旧账； 使…最终尝到苦果
Most late developers will catch up with their friends.
He stopped and let her catch up with him.
You walk on and I'll catch up with you later.