McCarthy was impressed with the commitment the players made to getting back to work, saying the practice was sharp.
"I definitely think it was beneficial," McCarthy said of the extended weekend. "I just think we need to be smart at the end of the week because we're going to a different climate."
The Packers worked indoors Monday with the temperature barely exceeding 50 and rain falling most of the day. They're preparing for a game Sunday at Miami, where temps are expected to be in the high 80s at kickoff.
"The emphasis on hydration obviously started today. It'll really be important middle of the week," McCarthy said. "We'll have the fruit table out in front of the meeting rooms. We'll take (precautionary) steps. Obviously, substitution (in the game) will be key.
"You definitely need to be aware of (the heat). After living in it for five years in New Orleans (when he was offensive coordinator from 2000-04), it's a distinct home advantage when you go down there for the home team. So, you need to be aware of it."
The heat also is figuratively on the Packers to snap out of their 1-4 funk against a similarly struggling Miami team.
McCarthy, who spent a part of the weekend in Texas visiting his daughter, is hopeful a fresh start is in order for the club.
"I think anytime you have a chance to step away, you have a chance to clear your mind. I know I did," he said. "I worked (Sunday) but also had the games on. And, as you watch other teams, as you watch how games are won and lost at the end, it just reconfirms what we need to do as a football team.
"(The bye is) always about re-correcting the things that you have not done very well. So, to me, it's almost a time to refocus and get going, and I think everybody had a chance to do that."
Cornerback Charles Woodson didn't practice Monday and is a question mark for Sunday's game at Miami because of rib and knee injuries he sustained in the last game Oct. 8.
"We're going to know more about him Wednesday. We're hoping for maybe Thursday (for practice)," head coach Mike McCarthy said.
McCarthy added that Woodson's ribs are sore and he needed to rehab in the therapy pool during the day. Still, the expectation is the veteran will be ready for Sunday.
If not, the Packers would have a big void to fill not only at left cornerback but at punt returner.
One possibility, at least for the latter spot, is Will Blackmon. The rookie cornerback continues to make headway in practice in his bid to finally get on the field for the first time this season after suffering complications in early September with a broken foot he sustained in the spring.
Blackmon returned punts in practice Monday and also was involved in all phases of the practice on defense. He's a candidate to take over as the nickel back.
-- RB Ahman Green practiced Monday and appears to be in good shape to return to action Sunday after missing the previous two games because of sore hamstrings.
Green was given most of the bye week off last week, with the exception of getting on the field for the team's final practice Thursday. "Just rehabbing him Tuesday and Wednesday and then practicing him on Thursday, I think more mentally it let him feel like he knew he was back and he could push the hamstring," McCarthy said.
K-Rob in Minnesota court
Wide receiver Koren Robinson will be in Minnesota on Tuesday to attend a pretrial hearing for charges he faces stemming from a drunken-driving incident near Mankato while he was in training camp with the Vikings in August. Robinson missed a part of practice Monday because he was tending to a matter related to the case.
Robinson is in the process of appealing a one-year suspension reportedly imposed by the league a few weeks ago. He already was sentenced to 90 days in jail in Kirkland, Wash., for violating the probation after he pleaded guilty to a drunken-driving charge in 2005.
-- P Jon Ryan rejoined the team Monday. Ryan was excused for the entire bye week so he could return to his home in Canada and be with his father, who's stricken with terminal cancer.
-- WR Robert Ferguson remains out indefinitely because of bone and cartilage damage to his right foot. Ferguson was injured returning a kickoff in the Week 4 loss at Philadelphia.
-- LT Chad Clifton is expected to be listed as questionable on the initial injury report Wednesday for Sunday's game. Clifton is nursing a shoulder injury he suffered on the last offensive play of the Week 5 loss to St. Louis on Oct. 8.
-- DT Cullen Jenkins also will be questionable for Sunday because of a bone bruise in his left ankle. Jenkins, who was on crutches during the bye week, suffered the injury in the last game.