It's been an upbeat week at the TFH High Performance Centre after the victory over the Knights last start but all is forgotten now ahead of a tough task against the Roosters this Saturday on the NSW Central Coast.
"There was a sense of relief last week after five losses in a row prior," Brennan said.
"It's been pretty good, pretty sharp and a lot of energy this week.
"It's been a little bit lighter this week to freshen them up but they're excited to go out there for the challenge against the Roosters this weekend."
Brennan himself had a sense of relief last weekend but he certainly noticed it amongst his troops.
"It's massive, it gives the boys a boost, especially off the back of five losses you know the win was good, it gives them some confidence. Hopefully it can springboard us into more success.
"It's important you start strong (in these big clashes), it's hard to come from behind."
One of the most pleasing things to come out of the past fortnight has been the combination struck up between halves Ash Taylor and AJ Brimson. Whilst good to see, Brennan knows there is still a lot more improvement in them both.
"There's some good signs, there is a long way to go. They've still got to work on some little things in their game. They are things that are a work in progress but there are some good signs there anyway."
Barring an issue between now and kick-off, the first-year NRL Coach believes international back rower Kevin Proctor will be out there on Saturday.
"Kev's trained well this week. He was really close last week, we didn't want to risk him this early in the season as he's such an important part of this side.
"He's ticked every box this week and trained well. As long as he gets through the Captain's run he'll be right to go on Saturday."
Coming up against a Roosters outfit who will be stinging after a defeat at the hands of the Broncos last week. One who is looking to impress in his final hit-out before Origin selection is young centre Lattrell Mitchell but the Coach knows they have strike power across the park.
"He's one of a lot of strike across the park. Tedesco at the back and Cordner who I'm a big fan of are also in there.
"We need to turn up with the right processes and attitude that's for sure.
"Up front with Dylan Napa and Jared Waerea-Hargraves, they bring a lot but it doesn't stop there."