Want to get a good workout, but don't want to waste a beautiful summer day at the gym? According to Harley Pasternak, celeb trainer and founder of the 5 Factor Diet, we don't have to sacrifice our summer sun for our workout time. Soak in the rays and get a bathing suit body with Pasternak's top summer fitness tips:

1. Get out of the gym! "A lot of the movements we do in the gym are things that can be done outside but we have the benefits of the beautiful scenery, the fresh air, the sunlight and the vitamin B." You can do sumo squats to tone your butt and thighs or side bends to work your love handles right in your own backyard!

2. Walk everywhere. When the weather is nice and time allows, walk. "Walking is the most effective form of exercise," Pasternak says. Schedule meetings of lunch close to work so you can walk and make sure to wear comfortable shoes! If you wear comfortable shoes, you can walk a few extra blocks and not have to take the subway or a cab. And the best part– walking is free! Save money and burn calories at the same time.

3. Get a hobby. "I used to laugh at my friends who garden, but I now garden," Pasternak says. "You don't even feel like your exercising. You're having fun and you're being healthy at the same time."

4. Train all around to look great all around. Pasternak's impressive list of clients, including Megan Fox, Amand Seyfried and Lady Gaga, don't train their abdominals solely on a forward plane like crunching and knee raises. Pasternak also trains them from side to side and on a rotational plane. "It's important to train your abs front to back, side to side and all around to look great all around," Pasternak says. Grab your yoga mat and work out a sweat poolside before jumping in!

If the Spring rain had you crammed up inside the past few months, make sure you ease back into working out to avoid injury. When the weather's hot, don't forget to drink plenty of water! Pasternak stresses that it's important to recognize when you are injured or need a break. Besides using Ace Bandages, his sponsor, he suggests seeing a doctor if the injury persists. And don't forget to wear sunscreen!