They make up the first GB Women’s boxing squad to go to the Olympics, with heavy expectation on them to finish the Games with medals.
However, it’s that goal that is driving the three fighters on to succeed at Excel London, more than becoming the first GB women boxers.
“I haven’t really thought about making history at the Olympics,” said middleweight world champion Marshall.
“I just take each day as it comes. Obviously we’re making history, but I haven’t really stopped to think about it because I want to be Olympic champion, so I’ve got other things to think about.
“It’s great to be going into the Games as a world champion. It’s unbelievable. I still can’t believe what I’ve achieved. I want to be an Olympic champion as bad as I want to be a world champion, but it’s going to be twice as hard.
“I need to get myself mentally tough and physically fit. If I do that, then I’ve got a really good chance of winning gold.”
Flyweight Adams, the most experienced member of the squad, is looking to go one better in her first Olympics than her three silvers at world championship level.
And the Leeds-born 29-year-old is concentrating on drawing on the positive vibe that a home crowd will give in her bid for gold.
She said: “The crowd is going to be a good thing. It really spurs you on to do better and it’s definitely going to have that effect on me, and it’s going to be amazing having the home crowd behind us.
“It’s going to be pretty easy to adapt to a home crowd where everyone wants you to win. It’s definitely not going to be hostile.
“We’ve got a lot of hard work still to be done, a lot of technical things and work on a lot of my faults.
"You’re going to see a whole new person when we get to the Games. I definitely want to be working on my faults – if those faults aren’t there, then how are they going to score.
“I’m going to give them all the same respect because everybody wants that Olympic gold. I just want it more.
“I think we’ve all got the capability of winning and getting gold. All it is, is putting the hard work in the time we’ve got now and we should be fine once we get to the Games.”
Liverpool boxer Jonas, who will fight at lightweight, is looking forward to sharing her greatest moment with her family, who are well known for their ‘Team Tasha’ support.
Jonas, 27 – the first woman to fight in a GB vest – is aware of the hard work ahead as she steps up her preparation at the training camp in Sheffield.
She said: “Its Monday to Friday’s in the camp now. We’ve proved that we’re one of the best teams in the world from our performance in the world championships.
“For me personally, it’s about the two people above me in the world at the moment, including Katie Taylor from Ireland, so I’ve got six weeks to put it right.
“It’ll be nice to share that moment with my family. They’ve been there through the ups and downs. I don’t think I’ll be able to hear them, but it’s just nice to know that they’re there.
“I realise how long it’s been, the road and the journey, but it has come quick. It’s all here and it’s upon us already.”