Nehwal says she won't be bothered if she does not win many Super Series titles next season.
"I am not challenging myself to win the Super Series because I have won a lot in the past, so I am not worried about that. But I have to get fitness at the right time, when I want to," Saina told reporters on the sidelines of the inauguration of PBL.
She clinched the Malaysia Masters in January, before winning a bronze at the World Championship and Senior Nationals this season.
In a free-wheeling interaction, Nehwal said: "After a series of first round and second round exits in the first half of the season, I didn't expect to win a bronze at World Championship beating these top players. But I have to get my fitness higher to play five back-to-back matches in any tournament.
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"Everyone is retrieving these days even if you smash hard, they still retrieve, so at the moment fitness is playing a big role in women's singles," she added.
Saina also clinched the Senior Nationals at Nagpur after beating P V Sindhu in the finals last November.
"I beat Sindhu on that day, I was good. I was moving well but I know I was tired, my stamina was finished in the second game. If the match would have gone to the third game, I don't think I would have lasted. I know Sindhu is much fitter than me right now," she said.
"In any sport now, it is all about fitness, it is not about experience and I have this belief if I'm fit then I can beat anyone," added Nehwal, who would take on Sindhu in the opening match of the PBL on December 23.
Nehwal said she focused on her knee and ignored other parts of her leg during rehabilitation post injury and it affected her fitness.
"If I would have been fitter in the last four months then I would have had more titles. It was challenging and I accepted it and didn't give up. I am thankful to my parents and Heath Mathews for guiding me."
Talking about Sindhu's meteoric rise, Nehwal said: "I think the time she had before Olympics that is giving her confidence to play such tough matches back-to-back. She was not moving well in China Open but she was again doing well in Hong Kong and Dubai Super Series."
Asked about the final losses that Sindhu suffered this season, Nehwal said: "It is little bit of luck, because both were the same till 19-19. So don't know what to say. It is tough. Look at Okuhara and Akane, how these short girls were rushing across the court and picking up strokes."
"At such intensity rallies with 50-60 strokes, I salute them. The way they were fighting back in both the matches. I couldn't believe these girls would have such reach."
"We will definitely come out with many medals this time. It is quite sure that most of us will play in the medal round but we also have to do well in Asian Games and World Championship," she said.
Nehwal returned to the Gopichand Academy after the Glasgow World Championship following a three year stint under Vimal Kumar at Bangalore.
Asked if it was awkward to return to her mentor, Nehwal said, "When I came back, I just told him that I want to play again and he was like I know that, so there was no discussion about past. He is the same as he was before, we don't have any issue with all that happened last three years."