If you have just a minute, drop down to the floor. Then get up.
Go down again. Jump up again. Repeat as many times as you can.
If you have 5 minutes, sit down and stand up. When you get tired, turn around and do push ups on the chair for support. When you get tired, go back to squats into the chair.
If you have 10 minutes, pick four exercises and rotate through them: 20 seconds of work, then rest for 10 seconds.
If you have 15 minutes, get on the floor and stand up. Do lunges for 10 steps each side. Get on the floor and get up again. Then do 10 more lunges. Next round do 2 more burpees between the sets of lunges. Then 3, then 4….
If you have 20 minutes, go outside and run from one light pole to the next and walk back. Then go again.
If you have 30 minutes, go outside. Walk for 10 minutes. Do the 10 minute workout above and then walk another 10 minutes.
If you have an hour, come to the gym and workout with me.
Your schedule will never be perfect.