buckle down

In March 2014, he decided to buckle down, eat better and exercise regularly.

But winning football teams just buckle down, slowly take control,  and—above all else—fight.

Results also come more slowly because detainees buckle down and resist.

After decades of pushing kids to buckle down and learn more at ever-younger ages, we haven't gotten very far.

He is having a grand time at Crompton, and I'm going to help him a while, and then buckle down to hard work in the office.

Sheer desire to accomplish had driven him at first; with the coming of the boys, he had to buckle down for their sakes.

But when your job happens to be war work too—well, you just buckle down to it extra hard.

Was it really worth while, he wondered, "to buckle down" and learn to read?

This was soon gone, and then Mrs. Vernon said they must buckle down to genuine camp life.