Present Simple: Does this man do exercises?
Present Continuous: Is this man doing exercises?
Present Perfect: Has this man done exercises?
Present Perfect Continuous: Has this man been doing exercises?

Past Simple: Did this man do exercises?
Past Continuous: Was this man doing exercises?
Past Perfect: Had this man done exercises?
Past Perfect Continuous: Had this man been doing exercises?

Future Simple: Will this man do exercises?
Future Continuous: Will this man be doing exercises?
Future Perfect: Will this man have done exercises?
Future Perfect Continuous: Will this man have been doing exercises?