to improve physical condition; to get fit
体調を改善する; 体を整える (taichou wo kaizen suru; karada wo totonoeru)
"He’s been going to the gym regularly to shape up before summer."
"彼は夏前に体を整えるために定期的にジムに通っています。" (kare wa natsu mae ni karada wo totonoeru tame ni teikitekini jim ni kayotteimasu.)
to introduce changes to improve a system or policy
to use your past achievements as a base for further progress
to request something
to prepare or plan a financial outline for a period
to create a strong basis for future development
to prepare mentally and physically for a challenge or task