How to do a straight leg raise:

Starting position: Lie flat on your back with your legs extended straight out in front of you, arms by your sides, or slightly off your body. 

Raise your legs: Slowly lift your legs off the ground, keeping them straight and together, until they are at a 90-degree angle (your body will form an "L" shape). 

Lower your legs: Slowly lower your legs back down to the starting position, keeping them straight. 

Repeat: Continue lifting and lowering your legs for the desired number of repetitions. 

Important considerations:

• Core engagement: Engage your abdominal muscles throughout the exercise to prevent lower back strain. 

• Controlled movements: Perform the exercise slowly and in a controlled manner, focusing on the movement rather than speed. 

• Proper form: Ensure your back is pressed against the floor to avoid arching. 

• Breathing: Inhale as you lower your legs and exhale as you lift them. 

• Progressions: As you get stronger, you can increase the number of repetitions, sets, or try more advanced variations like hanging leg raises.