The phrase "and started to exert" is correct and usable in written English.
It can be used when describing the initiation of an action or influence, often in a context where someone begins to apply effort or pressure.
Example: "After several weeks of planning, she and her team finally launched the campaign and started to exert their influence in the community."
Alternatives: "and began to apply" or "and commenced to exert".
As a matter of fact, GC rise during the night around 3 am and start to exert anti-inflammatory and immunosuppressive activities.
By that same year, 19 year old Wellington had become the team's secretary, and he started to exert influence over personal decisions.
Thurston extended the lead on 61 minutes when he got on to the end of a Paul Gallen break and, as Australia started to exert their dominance in the final quarter and increasingly found space out wide, Inglis added to the England misery.
Bayern, whose team included the formidable pair of Lothar Matthäus and Soren Lerby started to exert some authority in the second half, with Wohlfahrt missing a great headed chance.
Aberdeen started to exert pressure and both McLean and Rooney failed to make the most of half-chances before the unmarked Considine missed the target from six yards after Jonny Hayes' shot fell into his path.
And Williams believes Coleman has started to exert his influence on the Wales set-up after taking charge under extraordinary and difficult circumstances.
To stem the proliferation of these sites, organizations dedicated to eradicating such hatred have started to exert pressure on online services and shopping sites that deliver, however inadvertently, bigoted and racist views to a worldwide audience.
Reds manager Brendan Rodgers reacted by bringing on Philippe Coutinho and Lucas Leiva for Luis Alberto and Victor Moses at the break - and the move had the desired effect as the home side started to exert more pressure, with Gerrard heading a Coutinho corner just high.
Instead, it was not until the second half that, in danger of going out on the away-goal rule, they started to exert prolonged pressure on their opponents.
Unable to detail any progress in the talks, the sides have instead been focusing on highlighting what they call changing realities in the West Bank, where Palestinian security forces have started to exert more control.
