"坚持体育锻炼" 英文表达为 "stick to physical exercise" 或 "keep up with physical exercise"。
其中，"stick to" 意为 "坚持"，"keep up with" 意为 "继续"。
例句：
I try to stick to physical exercise every day to stay healthy. (我每天都尽量坚持体育锻炼来保持健康。)
She makes sure to keep up with physical exercise even when she's busy. (她确保即使忙碌时也能继续体育锻炼。)