How to make skating a good workout

Myth. When it comes to sleep no-nos, experts say this is a big one. Lying in bed, even with your eyes closed, for more than 15 to 20 minutes is one of the worst things you can do because it will train your brain to associate the bed with a lack of sleep. It can lead to chronic insomnia, Michael Grandner, a clinical psychologist and sleep expert, told CNN in an earlier interview.

"It's counterintuitive, but spending time in bed awake turns the bed into the dentist's chair," said Grandner, who directs the sleep and heath research program at the University of Arizona and the Behavioral Sleep Medicine Clinic at the Banner-University Medical Center in Tucson, Arizona.

"You want the bed to be like your favorite restaurant, where you walk in and you start getting hungry, even if you just recently ate," he added. "You want the bed to do that for sleep."

That's a fact. Banning smartphones (or any electrical device that emits blue light) from the bedroom an hour or so before bed and all through the night is a must for good slumber, experts say. Light tells the body to stop producing melatonin, the body's natural sleep aid, and studies have shown that blue light is especially toxic to sleep.

So when you get out of bed after 20 minutes of sleeplessness, avoid bright light, watching TV or checking social media. Instead, keep the lights dim and do something mindless, such as folding socks. Better yet, try doing one of these tricks to relax your mind and ready yourself for sleep.

That's a myth that used to be a fact "in the olden days," Dasgupta said.

"Now the data shows that exercise at any time is better than not exercising due to all the medical benefits, and it helps with stress reduction, which aids sleep," he said. "The data about not exercising at night is when you're doing extreme workouts like Olympic athlete-type exercises."

People who exercised for 35 minutes right before bed slept as well as they did on nights when they didn't exercise at all, a 2011 study found. If working out at night does affect your sleep, experts suggest exercising early in the evening so your heart rate and body temperature can return to normal before you hit the hay.

"If you ask me when's the perfect time to exercise, I think it's gonna be in the morning and outside in daylight. It resets the circadian rhythm and starts the day off with vigor," Dasgupta said. "But if nighttime exercise is best for you, that's fine."

Who doesn't believe this one? Sadly, the science says we're wrong. We may feel better after sleeping in on a Saturday or Sunday morning, but it will be to the detriment of our overall sleep health, experts say. By changing your wake-up time and bedtime on weekends (or day to day), your sleep rhythms aren't predictable, which can alter the body's circadian rhythm.

"You want to build a reliable rhythm, much like the drummer counting the beat for the band," Grandner said. "By controlling when you wake up and go to bed, you're setting the beat."

Overcome this myth by going to bed and getting up at the same time each day, even on weekends, vacations or after a night of poor sleep.

"The brain likes regularity and predictability," he added. "Waking up at the same time every day and then adding light and movement as soon as you wake up will set your other rhythms for the day and give you increased energy and mood."

A licensed and credentialed trainer can design a personalized program and teach you proper form and technique. Get referrals from local gyms, and many trainers now offer virtual workouts. After you learn the basics, you can work out on your own.

Training with free weights, like dumbbells, kettlebells and barbells, is often better for muscle building than machines, Shawn Pedicini, a physical therapist at Harvard-affiliated Spaulding Rehabilitation Hospital, says. “However, machines are ideal if you have balancing issues or other limitations that make it safer to sit during weight training,” he says. You can also go back and forth between free weights and machines depending on the type of exercise and which muscles you are working on.

While you need full-body workouts that address all your major muscles, older adults should pay special attention to their leg muscles: quadriceps and hamstrings (in the thighs), the gluteals (in the buttocks) and the calf muscles. “These are involved in many daily functional movements like squatting and climbing stairs,” Pedicini says. Compound exercises that work different muscles in one movement — like squats, deadlifts and lunges — are great for building leg muscles.

Pedicini says fewer reps with heavier weights helps you gain the most muscle. “An ideal routine would be eight repetitions for each exercise for three sets total.” But you can adjust this as needed. “People with movement issues might need to use lighter weights and do more repetitions.”

Lifting should be done at a seven-second tempo. That means three seconds to lift the weight, a one-second pause and three seconds to lower it. If you can’t lift the weight at least eight times, use a lighter weight. When you can comfortably perform eight reps without completely tiring the muscle, increase the weight. “Muscles grow stronger only if you keep adding resistance,” Pedicini says.

Ideally, you should do weight training at least twice a week. “Two days of full-body training can produce measurable changes in muscle strength,” Pedicini says. You often can feel results after four to six weeks of consistent training.

Always allow at least 48 hours between sessions for muscle recovery. Some people prefer to break their workouts into two parts: upper body and lower body. In that case, you can perform upper-body exercises one day and lower-body the next.

Use enough weight so that the last few reps of a lifting routine are challenging.

“Don’t forget to consistently challenge yourself as you progress,” Pedicini says. “It’s necessary to gain the muscle and strength changes you want and need.”