"strengthen back" is a grammatically correct and usable phrase in written English.
It can be used in a sentence when discussing physical fitness, posture, or overcoming challenges. Example: "In order to improve your posture, it's important to strengthen your back muscles with exercises like planks and rows."
At the same time, swimming and other aquatic exercises can strengthen back and core muscles.
Exercises to improve posture, strengthen back muscles and enhance mobility are less costly and likely to be more effective in the long run, the doctors wrote.
Forecasters said the system could strengthen back into a hurricane by Monday morning off the Maryland-Delaware coast, before weakening again as it moves north.
A strong energy sector paced the rally, thanks in large part to a move higher in the oil pits as traders keep a nervous eye on Tropical Storm Gustav, which may strengthen back into a hurricane by the time it reaches the Gulf of Mexico over Labor Day weekend.
Tropical Storm Gustav is expected to strengthen back into a hurricane by the time it hits the Gulf of Mexico Labor Day weekend, and with the storm threatening New Orleans and oil installations in the Gulf, the energy trade was volatile.
It was downgraded to a Category 3 storm as it moved north on Saturday morning, but is expected to strengthen back to a Category 4 before reaching the Florida Keys on Sunday morning.
If you have not suffered a vertebral fracture, adopting an exercise routine that improves posture and strengthens back muscles can go a long way toward preventing one.
After exchange rates had sunk to a low of 103 yen to the dollar, the yen strengthened back to around 94 to the dollar before sliding again.
"Considering the current trends in North America combined with our views of a strengthening back half related to carrier IPTV trends, we are reiterating our Outperform rating," wrote analyst Mark Sue in a research report Monday.
The hurricane then turned back to the northwest and strengthened back into a hurricane.
During that period, Bonnie actually strengthened back into a high-end tropical storm.
