"For the single leg lunge with bicep curl, you're doing two things at once, including burning calories with the legs - higher reps and lower weights tone rather than building large muscles," says Ramona.
Stand with your back facing away from a stable bench or chair, with enough room to extend your leg behind you and place your foot on the bench. You may want another chair nearby for support, and practise without the dumbbells first then add one in each hand if it's comfortable.
Lower slowly until your knee reaches a 90-degree bend, making sure the leg you are standing on is far enough from the chair so your knee doesn't go over your toes. As you exhale, push through your heel and stand back up until the supporting leg is straight. Repeat 10 times on the right leg then switch to do 10 reps on left.
To add a bicep curl, start with your arms down by your side and as you lower into the lunge, raise your arms up in a curl.