A nurse is providing discharge teaching for a client following coronary artery bypass graft surgery. Which of the following information should the nurse include in the teaching?

"You should walk 400 feet twice per day for the first week following discharge."

"Limit your sodium intake to 4 grams per day for 4 weeks following discharge."

"You can lift objects that weigh more than 20 pounds 2 weeks after discharge."

"You should wait at least 4 weeks before returning to work."