With all this being cooped up lately, I have been loving getting outside and enjoying the fresh air and sunshine as part of my workout. Start with a walk outside if you can - go around the block or up and down the street, or sub 2-3 sets of stairs, or 2 minutes of toe taps to curb or chair. Just get that blood moving and your muscles warm! 

Push-ups - the usual modifications here - from a plank, knees, incline, against a wall - and play with the width of your feet (more narrow is generally more difficult to stabilize, but can be much less comfortable if your belly is in the way, like mine!) 

Side planks - choose whatever position is most comfortable and appropriately challenging for you - from your feet or knees, and with a straight arm / palm of of your hand to the floor, or bent elbow with your forearm resting on the floor. If planks just aren’t happening, then switch to a gentle cat-camel mobilization, or bridges. 

Clamshells - lay on one side, stack your legs on top of one another, bend both your knees and try to position your feet in line with your hips and your shoulders. Do whatever is comfortable with your upper body (I like to prop my head up with the arm on the ground, and keep my top arm on my hip so that I minimize rotation of my hips). Then, roll your hips forward (think belly button angled towards the ground). Try to maintain this hips rolled forward position while you lift your top knee (keep your ankles together). You should not be able to lift super high - if you do, that means that you are rotating those hips and using your anterior hip musculature rather than isolating your glutes. Let me know if you have questions!